Choosing the Right Pump for Your Application

Pumps are essential pieces of equipment in a wide variety of industries, from agriculture to asphalt to chemical processing. The right pump can help you move fluids efficiently and reliably, but the wrong pump can lead to costly downtime and productivity losses.

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That's why it's so important to choose the right pump for your application. There are many factors to consider when selecting a pump, including the fluid being pumped, the flow rate required, the pressure needed, and the application environment.

In this guide, we will discuss the key factors to consider when choosing a pump. We will also provide a brief overview of the different types of pumps available.

Illustrative photo by @ThisIsEngineering

Factors to Consider When Choosing a Pump

By considering all of the factors involved in choosing a pump, professionals can ensure that they choose the right pump for their application and avoid costly mistakes. Choosing the right pump for your application is essential for ensuring the safe, efficient, reliable, compliant, and peace-of-mind operation of your equipment.

When choosing a pump, there are many factors to consider, including:

• Fluid being pumped: The first step is to identify the fluid that will be pumped. Different fluids have different properties, such as viscosity, corrosiveness, and temperature, which can affect the pump selection.
• Viscosity: Viscosity is a measure of how thick or thin a fluid is. Pumps that are designed for pumping low-viscosity fluids (such as water) may not be able to pump high-viscosity fluids (such as oil).
• Corrosiveness: Some fluids are corrosive and can damage the pump if it is not made of the right material.
• Temperature: The temperature of the fluid can also affect the pump selection. Pumps that are designed for pumping hot fluids may not be able to pump cold fluids.
• Flow rate: The flow rate is the amount of fluid that needs to be pumped per unit of time. The pump must be able to provide the required flow rate to meet the demands of the application.
• Pressure: The pressure is the force that the pump must exert on the fluid to move it. The pump must be able to provide the required pressure to overcome the resistance of the fluid and the piping system.
• Application environment: The pump must be able to operate safely in the application environment. This includes factors such as temperature, humidity, and the presence of corrosive or hazardous materials.
• Cost: Pumps can range in price from a few hundred dollars to several thousand dollars. Make sure to factor in the cost of the pump when making your decision.
• Warranty: Most pumps come with a warranty. Make sure to read the warranty carefully so that you understand what is covered.
• Service & support: Make sure that the pump manufacturer offers good service and support. This will be important if you ever need to troubleshoot or repair the pump.

Types of Pumps

There are many different types of pumps available, each with its own advantages and disadvantages. The following are some of the most common types of pumps:

Illustrative photo by Rohit Chaudhary

Centrifugal pumps

Centrifugal pumps are the most common type of pump. They are simple and efficient, and they can be used to pump a wide variety of fluids. They are simple and efficient, and they can be used to pump a wide variety of fluids. Centrifugal pumps work by rotating a impeller, which creates a centrifugal force that forces the fluid outward. The fluid then flows through the pump housing and out the discharge port.

Centrifugal pumps have a number of advantages, including:

• Simple design: Centrifugal pumps are relatively simple to design and manufacture, which makes them relatively inexpensive.
• Efficient: Centrifugal pumps are very efficient, which means they use less energy to pump fluids than other types of pumps.
• Versatile: Centrifugal pumps can be used to pump a wide variety of fluids, including water, oil, chemicals, and slurries.
• Durable: Centrifugal pumps are durable and can withstand harsh conditions.
• Reliable: Centrifugal pumps are reliable and have a long lifespan.

Centrifugal pumps are a good choice for a wide variety of applications, including:

• Water pumping: Centrifugal pumps are commonly used to pump water for irrigation, drinking water, and wastewater treatment.
• Chemical pumping: Centrifugal pumps are used to pump chemicals in industrial applications.
• Slurry pumping: Centrifugal pumps are used to pump slurries, which are mixtures of solids and fluids.
• Air conditioning and refrigeration: Centrifugal pumps are used to circulate refrigerant in air conditioning and refrigeration systems.

Here are some additional advantages of centrifugal pumps:

• Compact size: Centrifugal pumps can be made in a variety of sizes, including compact pumps that are ideal for small applications.
• Low noise: Centrifugal pumps are relatively quiet, which makes them a good choice for applications where noise is a concern.
• Easy to maintain: Centrifugal pumps are easy to maintain and repair.

Overall, centrifugal pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are simple to design and manufacture, efficient, durable, reliable, and easy to maintain. If you are looking for a pump for your application, a centrifugal pump is a good option to consider.

The Revolution® Series is a positive displacement pump by @VikingPump

Positive displacement pumps

Positive displacement pumps move fluid by trapping a fixed volume of fluid and then forcing it out. This type of pump is well-suited for pumping fluids with high viscosity or abrasive materials. Positive displacement pumps are also a good choice for applications where a constant flow rate is required.

There are many different types of positive displacement pumps, including:

• Gear pumps: Gear pumps use two gears to trap and move fluid. They are well-suited for pumping low-viscosity fluids.
• Vane pumps: Vane pumps use a rotor with vanes to trap and move fluid. They are also well-suited for pumping low-viscosity fluids.
• Rotary lobe pumps: Rotary lobe pumps use two or more rotors to trap and move fluid. They are well-suited for pumping viscous fluids.
• Peristaltic pumps: Peristaltic pumps use a flexible tube to trap and move fluid. They are well-suited for pumping delicate fluids.
• Diaphragm pumps: Diaphragm pumps use a flexible diaphragm to trap and move fluid. They are well-suited for pumping fluids that are hazardous or flammable.

Positive displacement pumps have a number of advantages, including:

• Constant flow rate: Positive displacement pumps deliver a constant flow rate, regardless of the pressure.
• Ability to pump high viscosity fluids: Positive displacement pumps can pump fluids with high viscosity, which makes them a good choice for applications where other types of pumps would not be effective.
• Abrasive resistance: Positive displacement pumps are resistant to abrasive materials, which makes them a good choice for applications where the fluid contains abrasive particles.
• Compact size: Positive displacement pumps can be made in a variety of sizes, including compact pumps that are ideal for small applications.

Positive displacement pumps are a good choice for a wide variety of applications, including:

• Chemical pumping: Positive displacement pumps are used to pump chemicals in industrial applications.
• Food and beverage processing: Positive displacement pumps are used to pump food and beverage products.
• Pharmaceutical manufacturing: Positive displacement pumps are used to pump pharmaceutical products.
• Water treatment: Positive displacement pumps are used to pump water for treatment and distribution.

Here are some additional advantages of positive displacement pumps:

• Low noise: Positive displacement pumps are relatively quiet, which makes them a good choice for applications where noise is a concern.
• Easy to maintain: Positive displacement pumps are easy to maintain and repair.

Overall, positive displacement pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are able to pump a variety of fluids, including those with high viscosity or abrasive materials. Positive displacement pumps also deliver a constant flow rate, which makes them a good choice for applications where a consistent flow rate is required. If you are looking for a pump for your application, a positive displacement pump is a good option to consider.

Illustrative photo by Branimir Barišić

Diaphragm pumps

Diaphragm pumps are a type of positive displacement pump that uses a flexible diaphragm to move fluid. The diaphragm is alternately flexed and relaxed by a mechanical actuator, such as a piston or a motor. As the diaphragm flexes, it creates a vacuum on one side of the pump chamber, which draws fluid into the chamber. When the diaphragm relaxes, it forces the fluid out of the chamber.

Diaphragm pumps have a number of advantages, including:

• Self-priming: Diaphragm pumps are self-priming, which means they can draw fluid up from a low suction point without the need for a priming device.
• Ability to pump hazardous or flammable fluids: Diaphragm pumps are well-suited for pumping hazardous or flammable fluids because the diaphragm acts as a barrier between the fluid and the pump mechanisms. This makes them a good choice for applications where there is a risk of fire or explosion.
• Quiet operation: Diaphragm pumps are relatively quiet, which makes them a good choice for applications where noise is a concern.
• Easy to maintain: Diaphragm pumps are relatively easy to maintain and repair.

Diaphragm pumps are a good choice for a wide variety of applications, including:

• Chemical pumping: Diaphragm pumps are used to pump chemicals in industrial applications.
• Food and beverage processing: Diaphragm pumps are used to pump food and beverage products.
• Pharmaceutical manufacturing: Diaphragm pumps are used to pump pharmaceutical products.
• Water treatment: Diaphragm pumps are used to pump water for treatment and distribution.

Here are some additional advantages of diaphragm pumps:

• Durable: Diaphragm pumps are durable and can withstand harsh conditions.
• Reliable: Diaphragm pumps are reliable and have a long lifespan.
• Versatile: Diaphragm pumps can be used to pump a variety of fluids, including those with high viscosity or abrasive materials.

Overall, diaphragm pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are able to pump a variety of fluids, including those with high viscosity or abrasive materials. Diaphragm pumps are also self-priming, quiet, and easy to maintain. If you are looking for a pump for your application, a diaphragm pump is a good option to consider.

Here are some additional details about diaphragm pumps:

• Diaphragm materials: The diaphragm is the most important part of a diaphragm pump. It is made from a flexible material that can withstand the pressure and temperature of the fluid being pumped. Common diaphragm materials include rubber, neoprene, and silicone.
• Actuator: The actuator is the mechanism that flexes and relaxes the diaphragm. Common actuators include pistons, motors, and pneumatic cylinders.
• Valves: Diaphragm pumps typically have two valves, a suction valve and a discharge valve. The suction valve opens when the diaphragm flexes, drawing fluid into the pump chamber. The discharge valve opens when the diaphragm relaxes, forcing fluid out of the pump chamber.
• Bearings: Diaphragm pumps typically have bearings to support the rotating parts of the pump. The bearings are made from a material that is compatible with the fluid being pumped.

The Classic+ Series™ / MultiPump® Series by @VikingPump

Rotary lobe pumps

Rotary lobe pumps are a type of positive displacement pump that uses two or more rotating lobes to move fluid. The lobes are typically made of a soft material, such as rubber or plastic, which allows them to flex and create a seal between the pump chambers. As the lobes rotate, they trap fluid in the pump chambers and then force it out of the pump.

Rotary lobe pumps have a number of advantages, including:

• Ability to pump viscous fluids: Rotary lobe pumps can pump fluids with high viscosity, which makes them a good choice for applications where other types of pumps would not be effective.
• Abrasive resistance: Rotary lobe pumps are resistant to abrasive materials, which makes them a good choice for applications where the fluid contains abrasive particles.
• Self-priming: Rotary lobe pumps are self-priming, which means they can draw fluid up from a low suction point without the need for a priming device.
• Quiet operation: Rotary lobe pumps are relatively quiet, which makes them a good choice for applications where noise is a concern.
• Easy to maintain: Rotary lobe pumps are relatively easy to maintain and repair.

Rotary lobe pumps are a good choice for a wide variety of applications, including:

• Chemical pumping: Rotary lobe pumps are used to pump chemicals in industrial applications.
• Food and beverage processing: Rotary lobe pumps are used to pump food and beverage products.
• Pharmaceutical manufacturing: Rotary lobe pumps are used to pump pharmaceutical products.
• Water treatment: Rotary lobe pumps are used to pump water for treatment and distribution.

Here are some additional advantages of rotary lobe pumps:

• Compact size: Rotary lobe pumps can be made in a variety of sizes, including compact pumps that are ideal for small applications.
• Variable speed operation: Rotary lobe pumps can be operated at variable speeds, which allows for precise control of the flow rate.
• Multi-phase pumping: Rotary lobe pumps can be used to pump fluids that contain both liquids and solids.

Overall, rotary lobe pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are able to pump a variety of fluids, including those with high viscosity or abrasive materials. Rotary lobe pumps are also self-priming, quiet, and easy to maintain. If you are looking for a pump for your application, a rotary lobe pump is a good option to consider.

Here are some additional details about rotary lobe pumps:

• Lobe materials: The lobes are the most important part of a rotary lobe pump. They are typically made of a soft material, such as rubber or plastic, which allows them to flex and create a seal between the pump chambers.
• Lobe configuration: The lobe configuration can affect the performance of the pump. Common lobe configurations include parallel lobes, opposed lobes, and intermeshing lobes.
• Drive mechanism: Rotary lobe pumps can be driven by a variety of mechanisms, including electric motors, hydraulic motors, and pneumatic motors.
• Seals: Rotary lobe pumps typically have seals to prevent the fluid from leaking out of the pump. The seals are made from a material that is compatible with the fluid being pumped.

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Qdos Metering Pump by Watson Marlow

Peristaltic pumps

Peristaltic pumps are a type of positive displacement pump that uses a flexible tube to move fluid. The tube is held in place by a series of rollers or fingers. As the rollers or fingers rotate, they squeeze the tube, creating a series of chambers. Fluid is drawn into the first chamber as the rollers or fingers move away from it. As the rollers or fingers move towards the chamber, the fluid is forced out.

Peristaltic pumps have a number of advantages, including:

• Ability to pump delicate fluids: Peristaltic pumps are gentle on fluids, making them a good choice for pumping fluids that are sensitive to shear stress, such as food products and pharmaceuticals.
• Self-priming: Peristaltic pumps are self-priming, which means they can draw fluid up from a low suction point without the need for a priming device.
• Quiet operation: Peristaltic pumps are relatively quiet, which makes them a good choice for applications where noise is a concern.
• Easy to maintain: Peristaltic pumps are relatively easy to maintain and repair.

Peristaltic pumps are a good choice for a wide variety of applications, including:

• Food and beverage processing: Peristaltic pumps are used to pump food products and beverages.
• Pharmaceutical manufacturing: Peristaltic pumps are used to pump pharmaceutical products.
• Chemical processing: Peristaltic pumps are used to pump chemicals.
• Water treatment: Peristaltic pumps are used to pump water for treatment and distribution.

Here are some additional advantages of peristaltic pumps:

• Variable speed operation: Peristaltic pumps can be operated at variable speeds, which allows for precise control of the flow rate.
• Multi-phase pumping: Peristaltic pumps can be used to pump fluids that contain both liquids and solids.
• No seals or valves: Peristaltic pumps have no seals or valves, which makes them leak-proof and easy to clean.

Overall, peristaltic pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are able to pump a variety of fluids, including those that are delicate, sensitive to shear stress, or contain solids. Peristaltic pumps are also self-priming, quiet, and easy to maintain. If you are looking for a pump for your application, a peristaltic pump is a good option to consider.

Here are some additional details about peristaltic pumps:

• Tube materials: The tube is the most important part of a peristaltic pump. It is typically made of a soft material, such as rubber or plastic, which allows it to be squeezed by the rollers or fingers without breaking.
• Roller or finger materials: The rollers or fingers are also important parts of a peristaltic pump. They are typically made of a material that is compatible with the fluid being pumped.
• Speed control: Peristaltic pumps can be speed controlled by varying the speed of the motor that drives the rollers or fingers.
• Cleaning: Peristaltic pumps are easy to clean. The tube can be removed and replaced, and the rollers or fingers can be cleaned with a mild detergent.

Peristaltic pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are able to pump a variety of fluids, including those that are delicate, sensitive to shear stress, or contain solids. Peristaltic pumps are also self-priming, quiet, and easy to maintain. If you are looking for a pump for your application, a peristaltic pump is a good option to consider.

Illustrative photo by Kalidash

Gear pumps

Gear pumps are a type of positive displacement pump that uses two gears to move fluid. The gears are typically made of metal, such as steel or brass. As the gears rotate, they mesh together, trapping fluid between them. The fluid is then forced out of the pump as the gears continue to rotate.

Gear pumps have a number of advantages, including:

• Low cost: Gear pumps are relatively inexpensive to purchase and operate.
• Simple design: Gear pumps are simple to design and manufacture, which makes them reliable and easy to maintain.
• Versatile: Gear pumps can be used to pump a variety of fluids, including water, oil, and chemicals.
• Self-priming: Gear pumps are self-priming, which means they can draw fluid up from a low suction point without the need for a priming device.
• Quiet operation: Gear pumps are relatively quiet, which makes them a good choice for applications where noise is a concern.

Gear pumps are a good choice for a wide variety of applications, including:

• Food and beverage processing: Gear pumps are used to pump food products and beverages.
• Pharmaceutical manufacturing: Gear pumps are used to pump pharmaceutical products.
• Chemical processing: Gear pumps are used to pump chemicals.
• Water treatment: Gear pumps are used to pump water for treatment and distribution.

Here are some additional advantages of gear pumps:

• Compact size: Gear pumps can be made in a variety of sizes, including compact pumps that are ideal for small applications.
• Variable speed operation: Gear pumps can be operated at variable speeds, which allows for precise control of the flow rate.
• Long lifespan: Gear pumps have a long lifespan, making them a good investment for businesses.

Overall, gear pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are able to pump a variety of fluids, including those with low viscosity. Gear pumps are also self-priming, quiet, and easy to maintain. If you are looking for a pump for your application, a gear pump is a good option to consider.

Here are some additional details about gear pumps:

• Gear materials: The gears are the most important part of a gear pump. They are typically made of metal, such as steel or brass. The gears must be able to withstand the pressure and temperature of the fluid being pumped.
• Gear design: The gear design can affect the performance of the pump. Common gear designs include external gear pumps and internal gear pumps.
• Drive mechanism: Gear pumps can be driven by a variety of mechanisms, including electric motors, hydraulic motors, and pneumatic motors.
• Seals: Gear pumps typically have seals to prevent the fluid from leaking out of the pump. The seals are made from a material that is compatible with the fluid being pumped.

Gear pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are able to pump a variety of fluids, including those with low viscosity. Gear pumps are also self-priming, quiet, and easy to maintain. If you are looking for a pump for your application, a gear pump is a good option to consider.

LVP Series™ vane pump by @VikingPump

Vane pumps

Vane pumps are a type of positive displacement pump that uses vanes to move fluid. The vanes are typically made of a flexible material, such as rubber or plastic. As the rotor rotates, the vanes are forced against the inner wall of the pump housing, trapping fluid between them. The fluid is then forced out of the pump as the rotor continues to rotate.

Vane pumps have a number of advantages, including:

• Low cost: Vane pumps are relatively inexpensive to purchase and operate.
• Simple design: Vane pumps are simple to design and manufacture, which makes them reliable and easy to maintain.
• Versatile: Vane pumps can be used to pump a variety of fluids, including water, oil, and chemicals.
• Self-priming: Vane pumps are self-priming, which means they can draw fluid up from a low suction point without the need for a priming device.
• Quiet operation: Vane pumps are relatively quiet, which makes them a good choice for applications where noise is a concern.

Vane pumps are a good choice for a wide variety of applications, including:

• Food and beverage processing: Vane pumps are used to pump food products and beverages.
• Pharmaceutical manufacturing: Vane pumps are used to pump pharmaceutical products.
• Chemical processing: Vane pumps are used to pump chemicals.
• Water treatment: Vane pumps are used to pump water for treatment and distribution.

Here are some additional advantages of vane pumps:

• Compact size: Vane pumps can be made in a variety of sizes, including compact pumps that are ideal for small applications.
• Variable speed operation: Vane pumps can be operated at variable speeds, which allows for precise control of the flow rate.
• Long lifespan: Vane pumps have a long lifespan, making them a good investment for businesses.

Overall, vane pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are able to pump a variety of fluids, including those with low viscosity. Vane pumps are also self-priming, quiet, and easy to maintain. If you are looking for a pump for your application, a vane pump is a good option to consider.

Here are some additional details about vane pumps:

• Vane materials: The vanes are the most important part of a vane pump. They are typically made of a flexible material, such as rubber or plastic. The vanes must be able to withstand the pressure and temperature of the fluid being pumped.
• Rotor design: The rotor design can affect the performance of the pump. Common rotor designs include single vane pumps and multiple vane pumps.
• Drive mechanism: Vane pumps can be driven by a variety of mechanisms, including electric motors, hydraulic motors, and pneumatic motors.
• Seals: Vane pumps typically have seals to prevent the fluid from leaking out of the pump. The seals are made from a material that is compatible with the fluid being pumped.

Vane pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are able to pump a variety of fluids, including those with low viscosity. Vane pumps are also self-priming, quiet, and easy to maintain. If you are looking for a pump for your application, a vane pump is a good option to consider.

Illustrative photo by Hein Miessner

Screw pumps

Screw pumps are a type of positive displacement pump that uses two screws to move fluid. The screws are typically made of metal, such as steel or brass. As the screws rotate, they mesh together, trapping fluid between them. The fluid is then forced out of the pump as the screws continue to rotate.

Screw pumps have a number of advantages, including:

• High efficiency: Screw pumps are very efficient, which means they use less energy to pump fluids than other types of pumps.
• Versatile: Screw pumps can be used to pump a variety of fluids, including water, oil, and chemicals.
• Self-priming: Screw pumps are self-priming, which means they can draw fluid up from a low suction point without the need for a priming device.
• Quiet operation: Screw pumps are relatively quiet, which makes them a good choice for applications where noise is a concern.
• Long lifespan: Screw pumps have a long lifespan, making them a good investment for businesses.

Screw pumps are a good choice for a wide variety of applications, including:

• Food and beverage processing: Screw pumps are used to pump food products and beverages.
• Pharmaceutical manufacturing: Screw pumps are used to pump pharmaceutical products.
• Chemical processing: Screw pumps are used to pump chemicals.
• Water treatment: Screw pumps are used to pump water for treatment and distribution.

Here are some additional advantages of screw pumps:

• Compact size: Screw pumps can be made in a variety of sizes, including compact pumps that are ideal for small applications.
• Variable speed operation: Screw pumps can be operated at variable speeds, which allows for precise control of the flow rate.
• Smooth flow: Screw pumps produce a smooth flow of fluid, which is gentle on the fluid and the pump.
• Low maintenance: Screw pumps are relatively low-maintenance, making them a cost-effective option for businesses.

Overall, screw pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are able to pump a variety of fluids, including those with high viscosity. Screw pumps are also self-priming, quiet, and long-lasting. If you are looking for a pump for your application, a screw pump is a good option to consider.

Here are some additional details about screw pumps:

• Screw materials: The screws are the most important part of a screw pump. They are typically made of metal, such as steel or brass. The screws must be able to withstand the pressure and temperature of the fluid being pumped.
• Screw design: The screw design can affect the performance of the pump. Common screw designs include single screw pumps and twin screw pumps.
• Drive mechanism: Screw pumps can be driven by a variety of mechanisms, including electric motors, hydraulic motors, and pneumatic motors.
• Seals: Screw pumps typically have seals to prevent the fluid from leaking out of the pump. The seals are made from a material that is compatible with the fluid being pumped.

Screw pumps are a versatile and reliable type of pump that is well-suited for a wide variety of applications. They are able to pump a variety of fluids, including those with high viscosity. Screw pumps are also self-priming, quiet, and long-lasting. If you are looking for a pump for your application, a screw pump is a good option to consider.

Vacuum pumps

Vacuum pumps (also known as blowers) are a type of pump that creates a partial vacuum, or low pressure, by removing air or gas from a sealed chamber. Vacuum pumps are used in a variety of applications, including:

• Industrial: Vacuum pumps are used in industrial applications such as food processing, manufacturing, and chemical processing.
• Scientific: Vacuum pumps are used in scientific applications such as laboratory research and astronomy.
• Medical: Vacuum pumps are used in medical applications such as surgery and blood donation.

There are many different types of vacuum pumps, each with its own advantages and disadvantages. Some of the most common types of vacuum pumps include:

• Rotary vane pumps: Rotary vane pumps are a type of positive displacement pump that uses rotating vanes to create a vacuum. Rotary vane pumps are relatively inexpensive and easy to maintain. However, they are not very efficient and can only create a low vacuum.
• Scroll pumps: Scroll pumps are a type of positive displacement pump that uses two scrolls to create a vacuum. Scroll pumps are more efficient than rotary vane pumps and can create a higher vacuum. However, they are more expensive and complex to maintain.
• Turbomolecular pumps: Turbomolecular pumps are a type of kinetic energy pump that uses rotating blades to remove gas molecules from a sealed chamber. Turbomolecular pumps are the most efficient type of vacuum pump and can create a very high vacuum. However, they are also the most expensive type of vacuum pump and require regular maintenance.

Advantages of vacuum pumps:

• Ability to create a vacuum: Vacuum pumps are able to create a vacuum, or low pressure, which is useful for a variety of applications.
• Versatile: Vacuum pumps can be used in a variety of applications, including industrial, scientific, medical, and household.
• Portable: Some vacuum pumps are portable, which makes them easy to transport to different locations.
• Efficient: Some vacuum pumps are very efficient, which means they use less energy to create a vacuum.
• Quiet: Some vacuum pumps are quiet, which makes them a good choice for applications where noise is a concern.

Disadvantages of vacuum pumps:

• Cost & Maintenance: Vacuum pumps can be expensive, especially the more powerful and efficient models. Additionally, some vacuum pumps require regular maintenance, which can be costly.
• More Rigorous Safety Needed: Vacuum pumps can create a hazardous environment if the vacuum is too high. This is because the low pressure can cause liquids to boil and solids to sublimate.

Overall, vacuum pumps are a versatile and useful tool that can be used in a variety of applications. They are able to create a vacuum, which is useful for a variety of tasks. However, vacuum pumps can be expensive and require regular maintenance. (also known as blowers): Vacuum pumps are used to create a vacuum, which can be used to draw fluids into a container or to remove air from a sealed system. They are well-suited for pumping gases or vapors.

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Choosing the Right Pump

Additional reading:
Diaphragm Pump: A Comprehensive Guide

If you want to learn more, please visit our website piston type well pump.

Choosing the right pump for your application can be a daunting task. There are many different factors to consider, such as the type of fluid, the flow rate, the pressure, and the cost.

Here are some tips for choosing the right pump for your application:

Identify the type of fluid you will be pumping

The type of fluid you will be pumping is one of the most important factors to consider when choosing a pump. Different fluids have different properties, and not all pumps are compatible with all fluids. For example, some pumps are only designed for water, while others can handle more corrosive or abrasive fluids.

Here are some of the factors to consider when identifying the type of fluid you will be pumping:

• Viscosity: Viscosity is a measure of how thick or thin a fluid is. Pumps that are designed for water may not be able to handle fluids with high viscosity, such as oil or syrup.
• Corrosiveness: Some fluids are corrosive, and can damage the pump if they are not compatible. It is important to choose a pump that is made from materials that are resistant to corrosion.
• Abrasiveness: Some fluids are abrasive, and can wear down the pump over time. It is important to choose a pump that is made from materials that are resistant to abrasion.
• Temperature: The temperature of the fluid can also affect the performance of the pump. Some pumps are only designed for use with cold fluids, while others can handle hot fluids.

It is important to identify the type of fluid you will be pumping and choose a pump that is compatible with the fluid. By doing so, you can help to ensure that the pump will perform well and last for a long time.

Here are some additional tips for identifying the type of fluid you will be pumping:

• Read the fluid's safety data sheet (SDS). The SDS will provide information about the fluid's properties, such as viscosity, corrosiveness, and abrasiveness.
• Talk to a pump expert. If you are not sure what type of fluid you will be pumping, talk to a pump expert. They can help you assess your needs and recommend a pump that is right for you.
• Do some research online. There are many websites that provide information about different types of fluids. You can also read reviews of pumps to get an idea of how well they perform with different fluids.

By following these tips, you can identify the type of fluid you will be pumping and choose a pump that is compatible with the fluid. This will help to ensure that the pump will perform well and last for a long time.

1. Determine the flow rate you need. The flow rate is the amount of fluid that the pump will move per unit of time. It is important to choose a pump that can handle the required flow rate for your application.
2. Consider the pressure requirements. The pressure is the force that the pump will need to exert to move the fluid. It is important to choose a pump that can handle the required pressure for your application.
3. Set a budget. Pumps can range in price from a few hundred dollars to several thousand dollars. It is important to set a budget before you start shopping so that you don't overspend.
4. Consider the size and weight of the pump. If you will be moving the pump around, it is important to choose a pump that is not too large or heavy.
5. Look for features that are important to you. Some pumps have features such as variable speed control, self-priming capabilities, and quiet operation. If these features are important to you, be sure to choose a pump that has them.

Once you have considered all of these factors, you should be able to choose the right pump for your application.

Here are some additional tips for choosing the right pump:

• Talk to a pump expert. If you are not sure what type of pump you need, talk to a pump expert. They can help you assess your needs and recommend a pump that is right for you.
• Read reviews. Before you buy a pump, read reviews from other people who have used it. This can give you a good idea of how well the pump performs and if it is worth the price.
• Buy from a reputable dealer. When you buy a pump, be sure to buy from a reputable dealer. This will ensure that you get a quality pump that is backed by a warranty.

By following these tips, you can choose the right pump for your application and avoid making a costly mistake.

Determine the flow rate you need

The flow rate is the amount of fluid that the pump will move per unit of time. It is important to determine the flow rate you need before you choose a pump. If you choose a pump that is not powerful enough, it will not be able to move the required amount of fluid. This can lead to problems such as flooding, overheating, and damage to the pump.

Here are some factors to consider when determining the flow rate you need:

• The size of the tank or container you are pumping from. The larger the tank or container, the more flow rate you will need.
• The distance you need to pump the fluid. The further you need to pump the fluid, the more flow rate you will need.
• The pressure requirements. The higher the pressure requirements, the more flow rate you will need.
• The type of fluid you are pumping. Some fluids are more viscous than others, and will require more flow rate to move.

Once you have considered all of these factors, you should be able to determine the flow rate you need. It is important to choose a pump that can handle the required flow rate. By doing so, you can help to ensure that the pump will perform well and meet your needs.

Here are some additional tips for determining the flow rate you need:

• Talk to a pump expert. If you are not sure how to determine the flow rate you need, talk to a pump expert. They can help you assess your needs and recommend a pump that is right for you.
• Use a flow meter. A flow meter is a device that can measure the flow rate of a fluid. If you have access to a flow meter, you can use it to measure the flow rate of the fluid you will be pumping.
• Do some research online. There are many websites that provide information about flow rates. You can also read reviews of pumps to get an idea of how well they perform with different flow rates.

By following these tips, you can determine the flow rate you need and choose a pump that is right for you. This will help to ensure that the pump will perform well and meet your needs.

Consider the pressure requirements

The pressure is the force that the pump will need to exert to move the fluid. It is important to consider the pressure requirements before you choose a pump. If you choose a pump that is not powerful enough, it will not be able to move the fluid to the required pressure. This can lead to problems such as flooding, overheating, and damage to the pump.

Here are some factors to consider when considering the pressure requirements:

• The height you need to pump the fluid. The higher you need to pump the fluid, the more pressure you will need.
• The resistance of the pipes or hoses you are pumping through. The more resistance the pipes or hoses have, the more pressure you will need.
• The type of fluid you are pumping. Some fluids are more viscous than others, and will require more pressure to move.

Once you have considered all of these factors, you should be able to determine the pressure requirements. It is important to choose a pump that can handle the required pressure. By doing so, you can help to ensure that the pump will perform well and meet your needs.

Here are some additional tips for considering the pressure requirements:

• Talk to a pump expert. If you are not sure how to determine the pressure requirements, talk to a pump expert. They can help you assess your needs and recommend a pump that is right for you.
• Use a pressure gauge. A pressure gauge is a device that can measure the pressure of a fluid. If you have access to a pressure gauge, you can use it to measure the pressure of the fluid you will be pumping.

By following these tips, you can determine the pressure requirements and choose a pump that is right for you. This will help to ensure that the pump will perform well and meet your needs.

Here are some additional things to keep in mind when considering the pressure requirements of a pump:

• The higher the pressure, the more expensive the pump will be.
• Pumps that can handle high pressure tend to be larger and heavier than pumps that can handle lower pressure.
• Pumps that can handle high pressure may require special safety precautions, such as guards and ventilation.

It is important to weigh the cost, size, weight, and safety requirements of a pump when considering the pressure requirements. By doing so, you can choose a pump that is right for your needs and budget.

Consider the size and weight of the pump

The size and weight of the pump are important factors to consider, especially if you will be moving the pump around. If you need a pump that is small and lightweight, you will have more options to choose from. However, if you need a pump that is large and heavy, you will have fewer options to choose from.

Here are some factors to consider when considering the size and weight of the pump:

• The size and weight of the pump should be compatible with the application. For example, if you need a pump to move a small amount of fluid over a short distance, you can choose a small and lightweight pump. However, if you need a pump to move a large amount of fluid over a long distance, you will need a large and heavy pump.
• The size and weight of the pump should be compatible with the storage space. If you will be storing the pump in a small space, you will need to choose a small and lightweight pump.
• The size and weight of the pump should be compatible with the lifting and moving equipment. If you will be moving the pump by hand, you will need to choose a small and lightweight pump. However, if you will be moving the pump with a forklift or other lifting equipment, you can choose a larger and heavier pump.

Once you have considered all of these factors, you should be able to determine the size and weight of the pump you need. It is important to choose a pump that is the right size and weight for your application and budget.

Here are some additional tips for considering the size and weight of the pump:

• Talk to a pump expert. If you are not sure how to determine the size and weight of the pump you need, talk to a pump expert. They can help you assess your needs and recommend a pump that is right for you.
• Read the pump's specifications. The pump's specifications will typically include the size and weight of the pump.

By following these tips, you can determine the size and weight of the pump you need and choose a pump that is right for you. This will help to ensure that the pump is easy to use and store.

Here are some additional things to keep in mind when considering the size and weight of a pump:

• The larger and heavier the pump, the more expensive it will be.
• Larger and heavier pumps may require special lifting and moving equipment.
• Larger and heavier pumps may be more difficult to store.

It is important to weigh the cost, lifting and moving requirements, and storage requirements of a pump when considering the size and weight. By doing so, you can choose a pump that is right for your needs and budget.

Look for features that are important to you

The features of a pump are important factors to consider, as they can affect the performance, efficiency, and ease of use of the pump. Some of the most common features to look for include:

• Variable speed control: Variable speed control allows you to adjust the speed of the pump, which can be useful for controlling the flow rate and pressure of the fluid.
• Self-priming: Self-priming pumps can draw fluid up from a low suction point without the need for a priming device. This can be useful for applications where the fluid level is low or the pump is located below the fluid level.
• Quiet operation: Quiet operation is important for applications where noise is a concern, such as residential or office settings.
• Durability: Durability is important for applications where the pump will be used in harsh conditions, such as industrial or outdoor settings.
• Warranty: A warranty can provide peace of mind in the event that the pump malfunctions.

Once you have considered all of these factors, you should be able to determine the features that are important to you. It is important to choose a pump that has the features you need and want.

Here are some additional tips for looking for features that are important to you:

• Talk to a pump expert. If you are not sure what features are important to you, talk to a pump expert. They can help you assess your needs and recommend a pump that has the features you need.
• Read the pump's specifications. The pump's specifications will typically include a list of features.

By following these tips, you can determine the features that are important to you and choose a pump that has the features you need. This will help to ensure that the pump meets your needs and expectations.

Here are some additional things to keep in mind when looking for features in a pump:

• The more features a pump has, the more expensive it will be.
• Some features, such as variable speed control, may be more important for some applications than others.
• It is important to weigh the cost, features, and performance of a pump when making a decision.

It is important to consider your individual needs and budget when looking for features in a pump. By doing so, you can choose a pump that is right for you.

Would you like help selection new equipment?

Let our team of experienced fluid handling professionals help you choose the right pump for your needs and budget. We also offer installation, maintenance, and repair services to keep your pump running smoothly for years to come.

Advantages of Working with a Fluid Handling Professional

Working with a fluid handling professional when selecting a new pump can have many advantages. They can help you identify the root cause of pump problems and recommend solutions. Or they can help you develop a maintenance plan for your pumps to extend their lifespan. Also, they can help you comply with safety regulations and standards. Lastly, they can provide training on how to operate and maintain your pumps.

Here are a few of the most important:

Expertise

Expertise is one of the most important advantages of working with a fluid handling professional. Fluid handling professionals have years of experience in the industry and know the ins and outs of pumps and other fluid handling equipment. They can help you choose the right pump for your application and ensure that it is properly installed and maintained.

Here are some of the benefits of working with a fluid handling professional:

• They can help you choose the right pump for your application. Fluid handling professionals have a wide range of experience and knowledge, and they can help you choose the right pump for your specific needs. They can consider factors such as the type of fluid you will be pumping, the flow rate and pressure requirements, and the size and weight of the pump.
• They can ensure that the pump is properly installed. Fluid handling professionals can install the pump correctly and make sure that it is properly aligned and adjusted. This will help to ensure that the pump performs well and lasts for a long time.
• They can provide maintenance and repair services. Fluid handling professionals can provide maintenance and repair services for your pump. This will help to keep your pump running smoothly and prevent costly repairs.
• They can provide technical support. Fluid handling professionals can provide technical support if you have any questions or problems with your pump. They can help you troubleshoot problems and get your pump back up and running quickly.

If you are looking for a pump for your application, it is important to work with a fluid handling professional. They can help you choose the right pump, ensure that it is properly installed and maintained, and provide technical support if needed. This will help to ensure that your pump performs well and lasts for a long time.

Here are some additional things to keep in mind when working with a fluid handling professional:

• Make sure the professional has the right experience and qualifications. You should ask about the professional's experience and qualifications in fluid handling. They should have a proven track record of success in the industry.

By following these tips, you can find a reputable fluid handling professional who can help you choose the right pump for your application.

Time savings

Time savings is another important advantage of working with a fluid handling professional. Fluid handling professionals have the expertise and experience to quickly and efficiently choose, install, and maintain a pump for your application. This can save you a significant amount of time and hassle.

Here are some of the ways in which working with a fluid handling professional can save you time:

• They can help you choose the right pump quickly. Fluid handling professionals have a wide range of experience and knowledge, and they can help you choose the right pump for your specific needs quickly. This can save you hours of research and comparison shopping.
• They can install the pump quickly and efficiently. Fluid handling professionals have the skills and experience to install a pump quickly and efficiently. This can save you the time and hassle of installing the pump yourself.
• They can provide maintenance and repair services quickly. Fluid handling professionals can provide maintenance and repair services for your pump quickly. This can save you the time and hassle of having to troubleshoot and repair the pump yourself.
• They can provide technical support quickly. Fluid handling professionals can provide technical support if you have any questions or problems with your pump quickly. This can save you the time and frustration of trying to troubleshoot the problem yourself.

If you are looking for a pump for your application, it is important to consider the time savings that you can achieve by working with a fluid handling professional. They can help you choose, install, and maintain your pump quickly and efficiently, which can save you a significant amount of time and hassle.

Here are some additional things to keep in mind when considering the time savings of working with a fluid handling professional:

• The time savings can be significant. In some cases, working with a fluid handling professional can save you days or even weeks of time.
• The time savings can be valuable. The time that you save can be used for other important tasks, such as running your business or spending time with your family.

By working with a fluid handling professional, you can save time and hassle, and gain peace of mind. This can be a valuable investment for your business.

Peace of Mind

When you work with a fluid handling professional, you can be confident that your pump is properly chosen, installed, and maintained. This can give you peace of mind knowing that your pump will perform well and last for a long time.

Here are some of the benefits of peace of mind when working with a fluid handling professional:

• You can be confident that your pump is the right one for your application. A fluid handling professional will take the time to understand your needs and recommend the right pump for your application. This can give you peace of mind knowing that you are not wasting money on a pump that is not right for you.
• You can be confident that your pump is installed correctly. A fluid handling professional will install your pump correctly and make sure that it is properly aligned and adjusted. This can give you peace of mind knowing that your pump is not going to malfunction or leak.
• You can be confident that your pump is properly maintained. A fluid handling professional will provide maintenance and repair services for your pump as needed. This can give you peace of mind knowing that your pump will be kept in good working order and that you will not have to worry about unexpected breakdowns.
• You can be confident that you will get technical support if you need it. A fluid handling professional will provide technical support if you have any questions or problems with your pump. This can give you peace of mind knowing that you can get help if you need it.

If you are looking for a pump for your application, it is important to consider the peace of mind that you can achieve by working with a fluid handling professional. They can help you choose, install, and maintain your pump correctly, which can give you peace of mind knowing that your pump will perform well and last for a long time.

Here are some additional things to keep in mind when considering the peace of mind of working with a fluid handling professional:

• Peace of mind is priceless. The peace of mind that you can achieve by working with a fluid handling professional is priceless. It is worth the investment to know that your pump is properly chosen, installed, and maintained.
• Peace of mind can save you money. In the long run, peace of mind can save you money. By working with a fluid handling professional, you can avoid the cost of repairs and downtime due to a malfunctioning pump.
• Peace of mind can save you time. Peace of mind can also save you time. You will not have to worry about choosing, installing, or maintaining your pump yourself. This can free up your time to focus on other things.

By working with a fluid handling professional, you can achieve peace of mind, save money, and save time. This can be a valuable investment for your business.

Support

Support is another important advantage of working with a fluid handling professional. Fluid handling professionals can provide support before, during, and after the sale. This can help you get the most out of your pump and avoid problems.

Here are some of the ways in which a fluid handling professional can provide support:

• Pre-sale support: A fluid handling professional can help you choose the right pump for your application and answer any questions you have.
• Installation support: A fluid handling professional can help you install your pump correctly and make sure that it is properly aligned and adjusted.
• Maintenance support: A fluid handling professional can provide maintenance and repair services for your pump as needed.
• Technical support: A fluid handling professional can provide technical support if you have any questions or problems with your pump.

If you are looking for a pump for your application, it is important to consider the support that you will receive from a fluid handling professional. They can help you get the most out of your pump and avoid problems.

Here are some additional things to keep in mind when considering the support of a fluid handling professional:

• Support can be invaluable. The support that you receive from a fluid handling professional can be invaluable. It can help you get the most out of your pump and avoid problems.
• Support can save you money. In the long run, support can save you money. By working with a fluid handling professional, you can avoid the cost of repairs and downtime due to a malfunctioning pump.
• Support can save you time. Support can also save you time. You will not have to worry about troubleshooting problems or finding answers to questions on your own.

By working with a fluid handling professional, you can get the support you need to get the most out of your pump and avoid problems. This can be a valuable investment for your business or personal life.

Here are some additional tips for getting support from a fluid handling professional:

• Ask about the support that is offered. When you are considering a fluid handling professional, ask about the support that they offer. This will help you determine if they are the right fit for you.
• Ask for references. Ask the fluid handling professional for references. This will allow you to speak to other customers who have worked with them.

By following these tips, you can find a fluid handling professional who can provide you with the support you need.

Need a new pump for your industrial application?

At Arroyo Process Equipment, we've proudly been assisting industries and municipalites with their fluid handling systems for over 50 years. Our team has the expertise to help you find the perfect pump for your application, whether you need a pump for water, oil, or other fluids. We also offer installation, maintenance, and repair services to keep your pump running smoothly for years to come.

If you’re in the market for a new hydraulic pump, you may be a little overwhelmed by all of the different options in front of you. Between pump types, styles, fluids and all the specifications you need to follow, it can be a difficult task. Different applications have different needs and understanding how the design characteristics of hydraulic pumps influence each other can help you better fit the pump to the job.

Fortunately, we’ve compiled a guide to get you ready for a hydraulic pump purchase. Keep reading to learn more about different types and how to choose a hydraulic pump.

Types of Hydraulic Pumps

Hydraulic pumps use the principle of fluid displacement to convert mechanical energy into hydraulic energy, imparting it onto the gears of the pump. In general, the pump inlet creates a vacuum, using atmospheric pressure to pull the liquid in, out of the reservoir. Then the pump’s mechanical action, which varies by design, pushes the liquid through to the outlet and the rest of the hydraulic system. The pump does not generate pressure but creates flow.

Pumps can use positive displacement or non-positive displacement methods to generate this energy, which affects the rate of flow.

• In a positive-displacement pump, a fixed amount of fluid is trapped and displaced. The volume of liquid stays constant, and pressure does not increase. A positive displacement pump works on low-pressure applications, and they are sometimes called hydrostatic pumps.
• A non-positive displacement pump changes the velocity of the fluid as needed to create a continuous flow. This means that the pressure can vary with each cycle, but the maximum pressure is much higher than that of a positive displacement pump. Some pumps that follow this design are centrifugal and propeller pumps.

Most hydraulic pumps use positive displacement and include the following.

Gear Pumps

Gear pumps include internal and external types. In either configuration, two gears mesh together to carry fluid in between the teeth. These gears are usually straight spur, herringbone or helical styles. The drive shaft powers one gear, while the other idles and moves by linking up to the other. Since the chambers between the teeth are sealed, a vacuum forms when they come apart and pulls in the fluid from the inlet.

A gear pump tends to have high-efficiency levels when running at its maximum speed. There are several different design types when it comes to gear pumps.

• Internal gear pump: An internal gear pump, sometimes called a gerotor pump, is made up of two gears, one smaller than the other, usually with one or two fewer teeth in it. The outer gear has teeth pointing inward, while the inner gear has teeth pointing outward, so they mesh for part of the rotation. The flow of liquid moves through space inside of the gears. They create very little pulsation but lack high-pressure capabilities.
• External gear pump: In an external gear pump, fluid moves around the outside of two interlocked gears. Liquid moves between the pump housing and the gears, which form a vacuum to pull liquid in from the inlet port. These pumps offer higher speeds and relatively quiet operation.
• Axial-flow gear pump: An axial-flow gear pump, also called a screw pump, uses one, two or three screws to generate an axial flow. In two- and three-screw pumps, the rotors use intermeshing threads to carry the liquid. A single-screw pump moves it around between the rotor and the pump housing. This design offers very quiet operation since there is no pulsation or contact of metal parts.

Vane Pumps

In a vane pump, small vanes move in and out of a central rotor, usually offset for eccentricity, to create chambers that transfer the liquid through an oval- or crescent-shaped opening. The vanes extend outward past the edge of the central rotor and create the chambers when they push against the housing wall and extend with the natural curve of the space. Liquid is forced through the outlet when the space closes. A vane pump can follow fixed or variable displacement but has a relatively complex design compared to some other pump models.

Piston Pumps

A piston pump uses rotary power to create flow and is typically available in axial and radial types, which can offer fixed or variable displacement.

• Inline axial pumps: In this design, pistons are arranged in a circle in a cylinder block, with an angled swashplate on one side and inlet and outlet ports on the other. As the block rotates, the pistons meet the angle of the swashplate, causing them to move in and out and creating space in the chamber. This action occurs near the inlet valve, which creates a vacuum to pull in liquid. By the outlet valve, the pistons are forced back in, pushing the liquid out. The variable-displacement model allows the swashplate to change its angle and, by extension, the size of the piston stroke and the space it creates.
• Radial-piston pumps: Radial piston pumps have several different configuration options, including a change in piston shapes, variable and fixed displacement choices and valve types. For the most part, a radial pump is designed with pistons placed like wheel spokes around an eccentrically placed cam mounted on the drive shaft. As the drive shaft rotates, it moves the cam so the pistons push inward as it passes them. Springs on the pistons allow them to extend out as the cam moves further away. Each piston has an inlet and outlet port leading to its chamber, where valves control the intake and release of fluid.
• Bent-axis pumps: In the bent-axis design, two parts of the pump meet at an angle. On one side, the drive shaft turns a cylinder block with pistons attached. These pistons match up to bores in the other side. As the block with the pistons rotates, the distance between the pistons and the valving surface changes, altering the amount of space in the chamber. On the other side of the mechanism, these chambers take in liquid as the pistons move out and force it through the outlet as the pistons push in. The angle of the two parts partially determines the degree of displacement.

Considerations and Features

Between power, noise, maximum pressure and other factors, choosing a hydraulic pump involves a lot of different considerations. You’ll have to think about your needs and how you’ll operate the pump. Here are some features you should consider when purchasing one:

1. Hydraulic Fluid Viscosity

Fluid viscosity refers to the thickness of the liquid in your pump. The viscosity of your fluid can influence how well a given hydraulic pump will perform and which one you should use. Most pumps will have a maximum kinematic viscosity rating associated with them, and you’ll want to stick to this number. A fluid with too low a viscosity can limit the pump’s efficiency and increase wear. A fluid that is too viscous can also decrease efficiency and cause mechanical problems.

2. Fluid Type

The fluid used in your hydraulic system should also match the pump’s specifications. Most pumps will work well with standard hydraulic fluid, which is usually based in mineral oil. It has inherently good lubrication properties with a higher boiling point than water. Other types of fluid that you may need for specific applications include:

• Biodegradable: Many environmentally-sensitive applications use biodegradable hydraulic fluids to reduce risk in the event of spills. These fluids include those derived from vegetables, like soybean, sunflower and rapeseed oil. They are typically high in lubricity and are inherently anticorrosive, though they do oxidize quickly and can be contaminated by water. There are a few other types of biodegradable fluids that address some of these issues but may have more specific system requirements. Farm equipment and marine work are examples of jobs that may require biodegradable fluids.
• Phosphate ester: This synthetic fluid offers high thermal stability, lubrication and antiwear properties. Its primary use is in high-temperature applications where there is a risk of fire. Between high ignition temperatures, minimal oxidization and low heats for combustion, phosphate esters are hard to burn and can even self-extinguish. They are less viscous, however, and can be chemically aggressive on some seals and coatings. This kind of system can be expensive to maintain.
• Water glycol: Water glycol fluids are another fire-resistant option in applications where this is a concern. Water glycol is made up of water, a high molecular weight polyglycol, ethylene or diethylene glycol and an additive package. It is generally 38-45% water. The additives can offer characteristics like corrosion resistance, oxidation resistance and antiwear.

These fluids are not interchangeable with every pump, and finding one that works with your fluid needs is vital to choosing the best industrial hydraulic pump for your operation.

3. Flow Rate

Flow rate is calculated with:

• Pump speed in revolutions per minute (RPM)
• Pump efficiency in a percentage
• Displacement value

Pumps typically have maximum flow ratings in gallons per minute or liters per minute, which tell you how much they can move and may determine its ability to meet your needs.

4. Power Curves/Torque Ratings

When looking at the power of a pump, we combine torque and rotational speed. Torque is a critical component of determining your power needs. The easiest method of choosing needed torque is by comparing a new machine with an existing one that performs a comparable job. Consider how much more work is going to be needed of the new machine and multiply it by the old one’s torque rating. If an old machine is not available, you’ll have to calculate the torque.

Power curves can help you select the right pump by showing you a visual representation of how the power is affected by other specifications. It shows you how much power the pump demands at certain flow rates.

Remember that gasoline engines differ from electric motors because of the internal combustion engine’s torque-speed curve. Hydraulic pumps running on gasoline-powered engines need a higher power capacity than they would with an electric motor.

5. Speed

Operating speed looks at the revolutions per minute that the driveshaft makes. Different designs may offer higher or lower operating speeds.

6. Max Operating Pressure

Pumps usually have a maximum operating pressure listed in bars or pressure per square inch (PSI). Remember that a pump doesn’t create pressure. Any pressure is created by a load on the fluid. Loads placed on the fluid show up as pressure on the outlet, which is the maximum for the pump. This rating identifies where a pump can effectively withstand pressure without leaking or damaging the parts. Maximum operating pressure can vary widely across different pump designs.

7. Fixed Displacement Vs. Variable Displacement

Many types of hydraulic pumps are available in both fixed displacement and variable displacement configurations. These models differ in the amount of fluid that they displace.

• For a fixed displacement model, each cycle results in moving the same amount of fluid.
• A variable displacement pump is a little more complicated but can change factors such as flow rate and outlet pressure.

Variable displacement pumps are good for a wider variety of tools and projects, but fixed-displacement pumps work well in applications where they will be performing the same task repeatedly.

8. Maintenance Time and Costs

You’ll also want to factor in the maintenance considerations when purchasing a new hydraulic pump. Some are costlier than others to maintain, and staying on top of maintenance can help you extend your pump’s life and improve its performance.

Variable displacement pumps are generally more expensive to maintain due to their complexity. Some pumps have design properties that make them more adaptable to wear. Vane pumps, for example, are quite reliable since the vanes simply extend out as much as they need to if the casing starts to wear. External gear pumps are also known for being durable, but internal ones can be costly. Axial and bent-axis piston pumps are a little more complex to fix but tend to have long lifespans.

RG Group for Your Hydraulics Needs

Choosing a hydraulic pump is no easy task. It requires you to know a lot about your system’s demands and how different characteristics will interact with each other. Whether you know exactly what you need or may still need a little help, the experts at RG Group are ready to assist.

We’ve been in the business of hydraulics for over 70 years and take pride in our ability to support your company. Our staff is full of highly trained and certified technicians and engineers to help bring your hydraulics to life. We’ve worked in a wide variety of industries, from agriculture to power generation to transportation. Our line of services includes full assembly, testing and systems integration.

For more information on selecting the best industrial hydraulic pump for your business needs, contact one of our representatives today, or take a look at our selection of high-quality Parker hydraulic pumps. Whatever you need to get your hydraulic power up and running, RG Group can help.

If you are looking for more details, kindly visit industrial piston pump.