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Product degradation is a costly consequence of improper pump selection, which can lead to product losses, missed deliveries and decreased margins. Anderson Process offers an expansive line of Positive Displacement Pumps specifically engineered to provide consistent product transfer for challenging media.

With decades of experience in fluid dynamics, Anderson Process’s team of pump experts and engineers know that, in the long run, faster pumping isn’t always the right choice for all applications. For example, the transfer of high-viscosity fluids commonly found in the food or pulp and paper industries, or variable-viscosity fluids commonly found in chemical processing, requires a highly efficient pump that is capable of consistent flow rates. And fluids with suspended or fragile solids, such as those found in paints and pigments, need a pump that will minimize shear. Anderson Process’s offerings of Positive Displacement Pumps combine mechanical efficiency with steady flow rates to deliver fluid transfer capabilities that are both cost-effective and consistent.

Anderson Process is proud to partner with longtime pump manufacturers who are leading the industry in positive displacement pump technology. Our brands include Wilden®, Blackmer, Tuthill Pumps, Liquiflo, CAT Pumps, Ampco, and Graco. These brands are known within the process equipment industry for their quality craftsmanship, durability and superior reliability. Our comprehensive selection of diaphragm pumps and rotary pumps are designed to withstand the most demanding applications. Our sanitary pumps are engineered for easy cleaning and minimize contamination risks.

Whether you ultimately need a vane pump or a gear pump, or a piston pump or a lobe pump, Anderson Process’s pump experts will ensure your positive displacement pump is ideally specified and configured for the needs of your application, something warehouse pump suppliers can’t do. As an authorized service center for many of our brands, we can provide the hands-on service required to keep your equipment — and your process — running as efficiently as possible for as long as possible.

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Distributor of positive displacement pumps. Other products include high and low viscosity, gear, general purpose water, reverse osmosis, boiler feed, condensate, sump, submersible, air operated, drum, machine tool coolant, multi-stage booster, vacuum, centrifugal, air operated diaphragm, magnetic drive, seamless, metering, piston, progressing cavity, self-priming, solid handling, turbine, and vertical pumps. Repair, testing, and inspection services are available. Value-added pump services include design and application consulting, engineering, research and recommendations, project and individual pump quotations, pick-up and delivery, and rebuilding. Industries served include industrial, HVAC, commercial, biomedical, and chemical sectors. 24-hour shipping available.

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DXP represents several world class lobe pump suppliers and applies lobe pumps in multiple markets including food & beverage, pharmaceutical, biotechnology, chemical, municipal and other industrial markets.  Typically lobe pumps are used in sanitary or ultraclean applications but they can also be applied when transporting various forms of sludge, bio-solids or greases.  Unlike other rotary positive displacement pumps, lobe pump use timing gears to prevent the two rotors from contacting one another, allowing them to be more tolerant of solids and also to be more shear sensitive.

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Gear pumps are one of the most common types of positive displacement pumps. They provide a constant volume of fluid that passes between the teeth of two meshing gears and the casing. The rotating gears and separation of teeth create a suction that pulls fluid in through the inlet. The gears then trap the liquid and move it around the casing to the discharge or outlet. Each revolution creates consistency in the flow of fluid.

There are two main types of rotary gear pumps, internal and external. Both types use similar principles for pumping fluids. Two gears are inside a casing in a way that the teeth lock together. As a motor turns one of the gears the locking teeth turn the other. The difference in the two designs is that an external gear pump uses side-by-side gears (typically the same size), so when the motor turns one gear, the other rotates in the opposite direction. The internal gear pump design uses two different size gears. A motor turns the small gear, which is inside the larger gear, rotating it in the same direction.

DAE Pumps offers economical rotary gear pumps of both types in a variety of sizes. No other gear pumps can match the performance and durability of our pumps. Because of the close tolerance between the gears and casing, most gear pumps are highly susceptible to wear, but DAE Pumps gear pumps outperform all others. Our pumps process a wide range of viscosities and are ideal for handling fluids at high pressures and low flow rates. DAE Pumps rotary gear pumps are widely used in chemical installations to pump high viscosity fluids. They are one of the most common types of pumps for moving corrosive liquids and hydraulic fluid power applications.

DAE pumps gear pumps provide consistency in moving a variety of slurry materials and are suitable for several industries like paints, food processing, chemicals, oil & gas, and others. Our rotary gear pumps are available in duplex steel, cast steel, and cast iron, among other materials. Contact DAE Pumps to customize a pump to your specific needs.

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Positive displacement pumps create suction lift to push fluid mechanically through the system at a constant speed, regardless of inlet pressure. Positive displacement pumps are popular in water treatment, oil and gas, chemical and food and beverage industries due to their ability to operate effectively under high viscosity, high pressure, and differential flow operations.

Flo-Line is a proud partner of industry leading positive displacement pump manufacturers such as Pulsafeeder, Netzsch, Circor, Yamada, Abel, and more. Depending on the solid content or toxicity of the fluid, our extensive range of pumps offers a solution for every process need. Contact us for more information or request a quote on the positive displacement pump you need.

Along with centrifugal pumps, positive displacement pumps are one of the main types of pumping and fluid transfer solutions available for commercial applications. These pumps are typically used in cases where a constant flow rate is required.

The chambers within positive displacement pumps hold a fixed volume of liquid dependent on the requirements of your application, allowing them to transfer fluid at a constant pressure. We offer several variations of positive displacement pumps, including diaphragm pumps, progressive cavity pumps, rotary lobe pumps, gear pumps, and more.

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Viking Pump, a Unit of IDEX Corporation, leads the world in the design and manufacture of rotary Positive Displacement Pumps for use in some of the toughest applications. Since 1911, our innovative products have been key contributors to successful operations in virtually every industry—from military, to food and beverage, to chemicals, fuels, and plastics—reliably pumping materials that are thin, thick, hot, cold, liquid, solid, etc.

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A Liberty Process progressive cavity pump ideal for liquids with higher viscosities or thickness.  A progressive cavity pump will have about the same flow for any liquid viscosity. The mechanical efficiency and volumetric efficiency goes up when the viscosity increases, with lower power and more flow. If you have a pumping application where you need a constant flow, but the liquid viscosity is variable and will change, then the PC pump is an ideal choice.

A progressive cavity pump is good when the application requires a varied flow. A progressive cavity pump has a precise flow per revolution of the pump. It is therefore quite easy to regulate the pump flow by just simply regulating the pump speed. Modern pump speed controllers like variable frequency drives (VFD’s) are well suited to be used with progressive cavity pumps for varying pump speed and flow control.

Another good application for a progressive cavity pump is when the suction conditions of the pumping applications are not ideal. A progressive cavity pump requires much lower Net Positive Suction Head (NPSH) as compared to a centrifugal pump because the internal pump velocity is lower. A progressive cavity pump can pump when the suction pressure is as low as 28″ of mercury (Hg), a centrifugal pump cannot do this. A progressive cavity pump will easily fill and pump in difficult applications when a centrifugal pump will not.

Progressive cavity pumps are ideal for applications where the liquid is sheer sensitive again because of lower internal velocity. A good example would be pumping oil and water mixtures to separation devices. The separation device works much better when the oil droplets are larger. A progressive cavity pump will not change the oil droplets where a centrifugal pump will emulsify the oil and make the oil droplets very small and reduce the separation performance of the separator.

A progressive cavity pump is good to use when the liquid contains abrasive solids. Most other types of positive displacement pumps can’t pump solids very well or for very long due to their close tolerances and all metal designs. A gear pump or vane pump will simply wear out when solids are present in the liquid and the same would also happen to most centrifugal pumps and they could clog. A progressive cavity pump is designed to last longer than all other pumps on abrasive applications. The pump design with the rotor and stator is the heart of the pump design for abrasion resistance. The internal velocity of the liquid as it travels through the pump is much lower than other types of positive displacement pumps and centrifugal pumps and the rubber stator.

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ProcessFlo offers a variety of positive displacement pumps, including air operated diaphragm (AODD), rotary lobe, progressive cavity, internal and external gear, diaphragm, metering, sliding vane, and peristaltic pumps for hygienic and industrial applications.

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Positive Displacement pumps by John Brooks Company are commonly used for pumping high-viscosity fluids such as oil, paints, resins or foodstuffs. They are preferred in applications where accurate dosing or high-pressure output is required. The production of a pump is not affected by pressure and is selected where the supply is irregular. These pumps function to move fluid by repeatedly enclosing a fixed volume, with the aid of seals or valves and moving it mechanically through the system. The pumping action is cyclic and is driven by pistons, screws, gears, lobes, diaphragms or vanes. There are two main types: Reciprocating and Rotary.

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A Positive Displacement pump (PD pump) is a mechanical device which displaces a known quantity of liquid for every revolution or cycle that the pump completes. The flow rate through a positive displacement pump is directly proportional to its speed and number of cycles over a given time.

A positive displacement pump works by using a screw, a blade, a vane, a lobe, a gear or diaphragm. It creates a chamber or cavity between the pumping elements and the cavity in which the fluid is temporarily stored is moved by the reciprocating or rotary motion along the pipe to its destination.

Progressive Cavity Pump has a rotor rotating within a housing called a stator. The rotor is always metallic and the stator is made up of a rubber type of material. It looks somewhat like a screw thread – the fluid is between the cavities and the rotary motion of the rotor forces the fluid through from one end to the other. It has a low to moderate capacity, low to high pressure, good solids handling capability, one seal, low shear, constant flow and a low pulsation.

Rotary Lobe Pumphas moderate to high capacity, low to moderate pressure, good solids handling capability, two/four seals, a constant flow and moderate pulsation.

Screw Pump –the screw pump has multi versions known as multi screw pumps featuring moderate to high capacity, high pressures, only lubricative liquids, no solids handling capability, one seal and a constant flow.

Diaphragm Pump – Air Operated Diaphragm Pump has low to moderate capacity, low to moderate pressure, very low efficiencies, no seal and high pulsation.

Positive Displacement pumps are generally used for fluids with a relatively high viscosity. They can be used where high accuracy is required e.g metering or dosing. They can also be used where high pressures are required i.e high pressure washing. Waste Water Treatment is another application e.g Netzsch Tornado Rotary Lobe Pump

The main advantages of a Positive Displacement Pump is that it can handle highly viscous fluids whereas a Centrifugal Pump would be inefficient and require high driver powers. PD pumps also have a good volumetric efficiency & driver power is kept to a minimum. The flow rate is easily adjustable via a speed control because the flow rate is directly proportional to its speed. Driver sizing is not as critical as with a Centrifugal pump because the pump will deliver the known quantity of fluids regardless of system back pressure (losses). A Positive Displacement Pump  can produce a very low shear action in the case of sensitive fluids.

The main disadvantages of a Positive Displacement Pump  vs a Centrifugal pump is that dry running can be catastrophic due to either close clearances of parts or in the case of progressive cavity pumps the interference fit between the rotor and stator. All PD pumps require the installation of a pressure relief valve to prevent failure of the pump or piping in case of accident or closure of the delivery valve or blockage in the piping. Main pd pumps will produce pulsations which can lead to undesirable effects i.e vibration, product damage & water hammer.  PD pumps have a limited flow range ~1000m³/hr vs 180,000m³/hr Centrifugal Pumps. The material of construction of PD pumps are more limited in range of available materials than that of Centrifugal Pumps and finally PD pumps have limited solids handling ability in terms of size and/or content.

A Positive Displacement Pump will usually self-prime due to the very small clearances which exist within the pump. This will help it pull a vacuum and thus expel the air through the pump until the liquid reaches the pump. Care should be taken on the suction line i.e installation of a “goose neck” which will ensure there is some liquid in the pump during the priming cycle which will prevent dry running & consequently failure.

An Air Operated Diaphragm pump (AODD pump) is able to self-prime without any liquid being present but this capability to lift is limited if the line is empty of fluid.

Certain Positive Displacement Pumps can run dry  i.e Air Operated Diaphragm pumps have no parts requiring lubrication or no close clearances between parts. Peristaltic pumps can run dry as the hose is lubricated in a bath of its own fluid. Other types of PD pumps should not be run dry.

Every pump has a NPSH (Net pressure suction head) required to ensure reliable and trouble-free operation without damage caused by cavitation therefore therefore the  system should be designed to ensure there is a sufficient margin between NPSHA (Net pressure suction head available) and NPSHR (Net pressure suction head required).

Unlike a centrifugal pump which produces pressure, a positive displacement pump does not produce pressure – it is the system itself that develops pressure from the pressure drop which then creates a back pressure which largely depends on the flow rate through the system i.e higher flow rates will result in higher losses and as a result a higher back pressure. The back pressure is also dependent on the pressure in the vessel at the point of discharge i.e a hydrogen blanket present or steam. The pressure is controlled largely by the pumping rate, therefore, pressure is controlled by varying the speed of the pump. In cases where the variable speed drive is not deployed the system pressure will be controlled to a degree by the setting of the pressure relief valve.

Positive Displacement Metering pumps are usually used where a high degree of accuracy is required e.g in dosing applications where pH control is required e.g Waste Water Treatment Plants or where filling lines require accuracy of volumes of fluid dispersed into containers.

Flexachem are the leading distributors for Netzsch Positive Displacements Pumps in Ireland – Progressive Cavity Pump, Rotary Lobe Pump (Industrial applications) & Screw Pump. We also supply Inoxpa Sanitary Rotary Lobe Pump and Flotronic Air Operated Diaphragm Pumps for the Food & Beverage & Pharma sectors.

We provide localised technical support & on-site service engineering to support the operational needs of our clients. We also hold a heavily stocked inventory to help take the pressure off you in the event of unexpected emergencies. Why not contact one of our Pump Specialists if you have a particular application in mind.

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Positive displacement pumps move entrapped volumes of fluid mechanically through the system. On the intake (suction) side, the volume expands, while on the outlet (discharge) side, the volume contracts. The volume per revolution is therefore fixed and theoretically constant regardless of outlet pressure, inlet vacuum or fluid properties. Positive displacement pumps are also self-priming, creating strong vacuums on the inlet. This can simplify the overall system design and allow maintenance without manual re-priming.

The behavior of positive displacement pumps is considerably different from centrifugal pumps, which rely on the momentum of the accelerated fluid to deliver flow at pressure and are very sensitive to pressure changes. The graph on the right compares an external gear pump (common positive displacement pump) and centrifugal pump using the same size motor. While centrifugal pumps can reach considerably higher flow rates, they are extremely sensitive to pressure.

Flow independence from pressure is only theoretical. Material flex, internal leakage (“blow-by”), wear, and other variables result in slight pressure dependence. The amount of pressure dependence is a function of the type of pump as well as the precision of the pump components. When choosing a pump type a tradeoff must often be made between accuracy, life and system response. The negative aspects of the tradeoff can be minimized by working closely with the pump designer and using high precision, quality components.

Reciprocating positive displacement pumps operate by repeated linear movement of a mechanism. The movement is often called a stroke, and the size of a pump is often specified as the volume per stroke. The flow profile is pulsed due to the once per revolution discharge of a reciprocating pump. If improperly implemented the pulsed flow may cause excessive vibration and/or damage to the hydraulic system, sometimes referred to as “water hammer”. The pulsed flow also causes peak flow rates higher than the average flow rate, requiring careful design of the hydraulic circuit. Reciprocating pumps are ideal for precise, repeatable fluid metering and dosing. The most common types of reciprocating pumps are:Diaphragm pump

A diaphragm pump uses a flexible membrane (often called the diaphragm) that flexes inward and outward. The movement of the membrane changes the volume internal to the pump and, when coupled with valves, allows fluid to flow into and out of the pump. Diaphragm pumps are ideal for vacuum, air, and low pressure corrosive fluids.

In a piston pump the piston slides within a tightly fit cylinder. When the piston retracts, the volume expands. Typically, a valve on the inlet opens, allowing fluid to enter into the pump as the volume expands. When the piston reverses, the volume contracts, and a valve on the outlet opens, allowing the fluid to exit the pump.

This specialty version of the piston pump is valveless and is sometimes referred to as a valveless metering pump. The pumps have a sinusoidal linear motion coupled with 360° rotation of the piston. The piston has a flat on the end that opens/closes the inlet and outlet ports synchronized with piston motion. This type of pump eliminates valves, which can wear and stick, and greatly simplifies the overall design.

A plunger pump operates in a nearly identical manner to a piston pump. The difference is that the plunger moves through a seal into the pump volume. The displaced volume of the plunger changes the fluid volume within the pump, leading to pumping action.

Rotary positive displacement pumps use a series of rotating volumes to transfer fluids rather than the linear motion of reciprocating pumps. The rotating elements seal against the pump casing or against other rotating elements. Typically, there are multiple volumes per revolution, leading to a much smoother flow than reciprocating pumps. However, the volumes are typically not as precise as reciprocating pumps, which make them less suited for metering or dispensing applications. The most common types of rotary positive displacement pumps are:External gear pumps

External gear pumps are the simplest and most common type of rotary gear pump. They typically have two gears on separate shafts with one shaft connected to a motor. The unmeshing of the gears creates a vacuum on the inlet of the pump. When the gears are turned, fluid is trapped between the gear teeth and the cavity wall of the casing. It is then rotated to the outlet and discharged. Fluid cannot flow backward to the inlet because of the gear mesh and thus must discharge out the outlet. The pumped fluid lubricates the gear mesh and associated journal bearings.

Internal gear pumps use different sized gears with different numbers of teeth, one of which has internal teeth. The gears are eccentric to the pump casing, allowing a gap to open in the gear mesh as it rotates. The volumes are separated by a crescent-shaped element that acts as the seal. After passing the crescent, the mesh begins to close, discharging the volume to the outlet. Higher power requirements, added complexity of the crescent, and more difficult gear manufacturing make internal gear pumps a somewhat specialized class.

The gerotor is a special type of internal gear pump without use of the crescent element. The inner rotor is typically driven by a motor. Elimination of the crescent simplifies the design but requires high precision and low clearances. The smooth profile and operation allow use of specialized materials that are not possible in other traditional gear pumps.

Vane pumps have only one rotating element that is eccentric to the pump cavity. The rotating element contains multiple vanes that can slide or deform to fit the profile of the cavity wall. The vanes form a tight sliding seal against the cavity wall, trapping the volume of fluid on the inlet and discharging it to the outlet. Vane pumps are very insensitive to pressure changes because the vanes contact the cavity wall. However, sliding between the vanes and wall creates power, noise, and lifetime issues.

Sometimes known as roller pumps, peristaltic pumps move fluid by using rollers to trap liquid in a flexible tube and move it from the inlet to the outlet. This design results in fluid contact only with the inside of the tube. This feature coupled with easy-to-replace tubing makes peristaltic pumps ideal for one-time use applications such as blood contact in a dialysis machine. However, frequent squeezing of the tubing also requires frequent replacement of the tubing, which makes them troublesome for many applications. Peristaltic pumps have a pulsed flow, much like a reciprocating pump.

A lobe pump is similar to an external gear pump, but has lobe-shaped elements instead of gears. The lobe-shaped elements are each driven by a motor with timed gears. This eliminates contact between the two lobes, reducing wear and minimizing fluid shear. Lobe pumps are able to handle larger solids than other positive displacement pumps due to the small number of teeth.

Selecting the correct type of pump for a hydraulic system is the first step toward creating a reliable and efficient device. Close collaboration with pump design engineers is recommended to ensure the optimum pump is selected for long life and system stability. Choice of the correct pump type and quality at the beginning of the design process can greatly simplify the overall system, saving time, space, money and headaches.

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Positive displacement (PD) is a method that moves a fixed volume of material at a constant flow and speed. To achieve true positive displacement, industrial finishing systems need to be set up to avoid material slippage and packing.

Graco uses dosing cylinder pumps for accurate mixing and dosing of plural-component material in factory paint mix rooms. Such technology ensures better mixing efficiency, maximum flow control and consistent performance. At the same time, it can reduce solvent use and material waste throughout your finishing operation, from the mix room to the spray booth or paint line.

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Over half a century of excellence in designing and manufacturing internal gear pumps, external gear pumps, and positive displacement pumps for the OEM and process market. Haight Pump prides itself on its outstanding lead time and quality customer service.

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Hydraulic systems are in general members of the fluid power branch of power transmission. Hydraulic pumps are also members of the hydraulic power pack/hydraulic power unit family. Hydraulic units are encased mechanical systems that use liquids for hydraulics.

The hydraulic systems that hydraulic pumps support exist in a range of industries, among them agriculture, automotive manufacturing, defense contracting, excavation, and industrial manufacturing. Within these industries, machines and applications that rely on hydraulic pumps include airplane flaps, elevators, cranes, automotive lifts, shock absorbers, automotive brakes, garage jacks, off-highway equipment, log splitters, offshore equipment, hydraulic motors/hydraulic pump motors, and a wide range of other hydraulic equipment.

When designing hydraulic pumps, manufacturers have many options from which to choose in terms of material composition. Most commonly, they make the body of the pump–the gears, pistons, and hydraulic cylinders–from a durable metal material. This metal is one that that can hold up against the erosive and potentially corrosive properties of hydraulic fluids, as well as the wear that comes along with continual pumping. Metals like this include, among others, steel, stainless steel, and aluminum.

First, what are operating specifications of their customer? They must make sure that the pump they design matches customer requirements in terms of capabilities. These capabilities include maximum fluid flow, minimum and maximum operating pressure, horsepower, and operating speeds. Also, based on application specifications, some suppliers may choose to include discharge sensors or another means of monitoring the wellbeing of their hydraulic system.

Next, what is the nature of the space in which the pump will work? Based on the answer to this question, manufacturers will design the pump with a specific weight, rod extension capability, diameter, length, and power source.

Manufacturers must also find out what type of substance does the customer plan on running through the pumps. If the application calls for it, manufacturers can recommend operators add other substances to them in order to decrease the corrosive nature of certain hydraulic fluids. Examples of such fluids include esters, butanol, pump oils, glycols, water, or corrosive inhibitors. These substances differ in operating temperature, flash point, and viscosity, so they must be chosen with care.

All hydraulic pumps are composed in the same basic way. First, they have a reservoir, which is the section of the pump that houses stationary fluid. Next, they use hydraulic hoses or tubes to transfer this fluid into the hydraulic cylinder, which is the main body of the hydraulic system. Inside the cylinder, or cylinders, are two hydraulic valves and one or more pistons or gear systems. One valve is located at each end; they are called the intake check/inlet valve and the discharge check/outlet valve, respectively.

Hydraulic pumps operate under the principle of Pascal’s Law, which states the increase in pressure at one point of an enclosed liquid in equilibrium is equally transferred to all other points of said liquid.

To start, the check valve is closed, making it a normally closed (NC) valve. When the check is closed, fluid pressure builds. The piston forces the valves open and closes repeatedly at variable speeds, increasing pressure in the cylinder until it builds up enough to force the fluid through the discharge valve. In this way, the pump delivers sufficient force and energy to the attached equipment or machinery to move the target load.

When the fluid becomes pressurized enough, the piston withdraws long enough to allow the open check valve to create a vacuum that pulls in hydraulic fluid from the reservoir. From the reservoir, the pressurized fluid moves into the cylinder through the inlet. Inside the cylinder, the fluid picks up more force, which it carries over into the hydraulic system, where it is released through the outlet.

Piston pumps create positive displacement and build pressure using pistons. Piston pumps may be further divided into radial piston pumps and axial piston pumps.

Radial pumps are mostly used to power relatively small flows and very high-pressure applications. They use pistons arranged around a floating center shaft or ring, which can be moved by a control lever, causing eccentricity and the potential for both inward and outward movement.

Axial pumps, on the other hand, only allow linear motion. Despite this, they are very popular, being easier and less expensive to produce, as well as more compact in design.

Gear pumps, or hydraulic gear pumps, create pressure not with pistons but with the interlocking of gear teeth. When teeth are meshed together, fluid has to travel around the outside of the gears, where pressure builds.

External gear pumps facilitate flow by enlisting two identical gears that rotate against each other. As liquid flows in, it is trapped by the teeth and forced around them. It sits, stuck in the cavities between the teeth and the casing, until it is so pressurized by the meshing of the gears that it is forced to the outlet port.

Internal gear pumps, on the other hand, use bi-rotational gears. To begin the pressurizing process, gear pumps first pull in liquid via a suction port between the teeth of the exterior gear, called the rotor, and the teeth of the interior gear, called the idler. From here, liquid travels between the teeth, where they are divided within them. The teeth continue to rotate and mesh, both creating locked pockets of liquid and forming a seal between the suction port and the discharge port. Liquid is discharged and power is transported once the pump head is flooded. Internal gears are quite versatile, usable with a wide variety of fluids, not only including fuel oils and solvents, but also thick liquids like chocolate, asphalt, and adhesives.

Various other types of hydraulic pumps include rotary vane pumps, centrifugal pumps, electric hydraulic pumps, hydraulic clutch pumps, hydraulic plunger pumps, hydraulic water pumps, hydraulic ram pumps, portable 12V hydraulic pumps, hydraulic hand pumps, and air hydraulic pumps.

Rotary vane pumps are fairly high efficiency pumps, though they are not considered high pressure pumps. Vane pumps, which are a type of positive-displacement pump, apply constant but adjustable pressure.

Centrifugal pumps use hydrodynamic energy to move fluids. They feature a rotating axis, an impeller, and a casing or diffuser. Most often, operators use them for applications such as petroleum pumping, sewage, petrochemical pumping, and water turbine functioning.

Electric hydraulic pumps are hydraulic pumps powered by an electric motor. Usually, the hydraulic pump and motor work by turning mechanisms like impellers in order to create pressure differentials, which in turn generate fluid movement. Nearly any type of hydraulic pump can be run with electricity. Most often, operators use them with industrial machinery.

Hydraulic clutch pumps help users engage and disengage vehicle clutch systems. They do so by applying the right pressure for coupling or decoupling shafts in the clutch system. Coupled shafts allow drivers to accelerate, while decoupled shafts allow drivers to decelerate or shift gears.

Hydraulic ram pumps are a type of hydraulic pump designed to harness hydropower, or the power of water, to elevate it. Featuring only two moving hydraulic parts, hydraulic ram pumps require only the momentum of water to work. Operators use hydraulic ram pumps to move water in industries like manufacturing, waste management and sewage, engineering, plumbing, and agriculture. While hydraulic ram pumps return only about 10% of the water they receive, they are widely used in developing countries because they do not require fuel or electricity.

Hydraulic water pumps are any hydraulic pumps used to transfer water. Usually, hydraulic water pumps only require a little bit of energy in the beginning, as the movement and weight of water generate a large amount of usable pressure.

Air hydraulic pumps are hydraulic pumps powered by air compressors. In essence, these energy efficient pumps work by converting air pressure into hydraulic pressure.

Hydraulic pumps are useful for many reasons. First, they are simple. Simple machines are always an advantage because they are less likely to break and easier to repair if they do. Second, because fluid is easy to compress and so quick to create pressure force, hydraulic pumps are very efficient. Next, hydraulic pumps are compact, which means they are easy to fit into small and oddly shaped spaces. This is especially true in comparison to mechanical pumps and electrical pumps, which manufacturers cannot design so compactly. Speaking of design, another asset of hydraulic pumps is their customizability. Manufacturers can modify them easily. Likewise, hydraulic pumps are very versatile, not only because they are customizable, but also because they can work in places where other types of pump systems can’t, such as in the ocean. Furthermore, hydraulic pumps can produce far more power than similarly sized electrical pumps. Finally, these very durable hydraulic components are much less likely to explode than some other types of components.

To make sure that your hydraulic pumps stay useful for a long time, you need to treat them with care. Care includes checking them on a regular basis for problems like insufficient fluid pressure, leaks, and wear and tear. You can use diagnostic technology like discharge sensors to help you with detect failures and measure discharge pressure. Checking vibration signals alone is often not enough.

To keep yourself and your workers safe, you need to always take the proper precautions when operating or performing maintenance and repairs on your hydraulic pumps. For example, you should never make direct contact with hydraulic fluid. For one, the fluid made be corrosive and dangerous to your skin. For two, even if the pump isn’t active at that moment, the fluid can still be pressurized and may potentially harm you if something goes wrong. For more tips on hydraulic pump care and operation, talk to both your supplier and OSHA (Occupational Safety and Health Administration).

Pumps that meet operating standards are the foundation of safe and effective operations, no matter the application. Find out what operating standards your hydraulic pumps should meet by talking to your industry leaders.

The highest quality hydraulic pumps come from the highest quality hydraulic pump manufacturers. Finding the highest quality hydraulic pump manufacturers can be hard, which is why we have we listed out some of our favorites on this page. All of those whom we have listed come highly recommended with years of experience. Find their information nestled in between these information paragraphs.

Once you have put together you list, get to browsing. Pick out three or four hydraulic pump supply companies to which you’d like to speak, then reach out to each of them. After you’ve spoken with representatives from each company, decide which one will best serve you, and get started on your project.

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Since 1929, Northern Pump has manufactured HIGH PRESSURE heavy duty positive displacement rotary gear pumps. With Northern’s inception as Northern Fire Apparatus Company through modern day, as part of McNally Industries, the intention is to manufacture a gear pump that can outperform others in high pressure and severe applications.

Northern® Heavy Duty gear pumps are available in all shapes and sizes. Our modular design allows us to customize a gear pump for your specific application.

Skilled mechanics at the Northern factory are standing by to recondition your pump back to it’s original condition. After a careful disassembly process, the entire pump is inspected to determine parts that need replacement or reconditioning.

Northern Pump has manufactured precision gear pumps for over ninety years. Yet, we still encounter new applications daily. Chances are, we already have experience with your application.

Midstream Company Utilizes the Northern® 4800Crude Oil Pipeline Injection Pump Grantsburg, WI – Northern Pump, entered into a purchase agreement with a […]

Northern Melts Away Sulfur Pump Delivery Concerns Grantsburg, WI – Northern Pump, successfully delivered two custom pumps for an international customer in […]

Northern 4800 Crude Oil Injection Pump Offshore Application Northern Pump, successfully completed a field overhaul project for a key crude oil pipeline […]

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Positive displacement pumpManufacturer of a wide range of products which include positive displacement pumps, pd rotary pumps and positive displacement gear pump.

PD Pump SelectionModel FTRN/FTRB : The self lubricated needle roller bearing type Model FTRN used for clean viscous liquid having sufficient lubricating property such as clean lube oil, Gear oil, Animal oil, Fish oil, Hydraulic oil, Honey, Vegetable oil, SAE lubricating oil for continues duty, However for Intermittent duty Bush Bearing type pump Model FTRB used.

Model FTRX : This Model independent lubricated needle roller bearing type pump is suitable for handling of Crude oil, Dirty lube oil, HSD, Kerosene, LDO, Paints, Varnish, Wood Pulp, Liquid which have poor lubricant value.

Model FTRBJ : This Model should be selected for liquid which tends to solidify at room temperature such as Bitumen, Furnace oil, Asphalt, Tar, Starch, Molasses, Naptha, RFO, Silicate, Wax, Soap solution. Because This model have jacketing construction facilitate the heating the pump by steam or thermic fluid.

gear pump Model “FT” (Rotary Gear Pumps) which is self priming, foot mounting type positive displacement rotary gear pump. Model “FT” having simple two pieces Cast Iron construction which is single helical modified profile carton steel gear shrink fitted on alloy steel hardened and grind finished shaft as gear firmly supported 4 nos. of self lubricated sintered bronze bush bearing which ensure smooth running. These pumps can be run in either direction with change in inlet-outlet port position. The relief valve operations can be reversed by simply changing the R.V. parts on opposite side.

The suction and delivery connections are available in 1/4" to 3" sizes. These pumps can be operated up to pressure of 10 kg/cm² with 5 LPM to 500 LPM flow capacity. These pumps are designed to run at 1440 RPM up to viscosity of 50,000 to 1,00,000 SSU and maximum temperature up to 200ºcproportion to the speed.