positive displacement hydraulic pump price

Every positive displacement pump causes a fluid to move by trapping a fixed amount of fluid and then forcing that trapped volume into the discharge pipe or displacing the fluid. There are two main types of positive displacement pumps – reciprocating and rotary.

With reciprocating positive displacement pumps, a certain volume of liquid is collected in enclosed volume and is discharged using pressure. There are different types of reciprocating pumps including piston pumps, plunger pumps and diaphragm pumps. All are more suitable for low volumes of flow at high pressures.

A rotary pump is a positive displacement type pump with a chamber that contains elements that are actuated by the relative rotation of the drive shaft to the casing. These elements may be gears, cams, screws, lobes, vanes, plungers or similar elements. The casing has no separate inlet or outlet valves.

A rotary PD pump is often used for high viscosity fluids. In fact, a rotary pump is one of the main types of PD pumps used across many industries, due to the versatility of designs. Uses for a rotary PD pump include:Food processing

One of the main advantages of a positive displacement pump is its ability to produce a consistent flow rate even when there are changes in pressure. Centrifugal pumps, on the other hand, are designed to react to changes in pressure.

As previously mentioned, a PD pump is also good for highly viscous fluids, because the flow rate of a positive displacement pump increases as viscosity increases. In addition, because PD pumps do not have any high-speed components, they will not apply a great deal of shear to fluids, so they are ideal for shear sensitive mediums. They are also specified for applications that require suction lift capabilities.

Many different types of positive displacement pumps are available at various price points. Choosing the best PD pump helps optimize performance, while poor selection leads to wasted energy and increased lifetime pump cost.

Our team can develop durable, cost-effective rotary pump solutions for your unique requirements in Colorado, Wyoming and the Rocky Mountain states. Contact Centennial Equipment today and let our team help you find the best positive displacement pump solution for your needs.

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.

A: Viking Pump operates a foundry, a 250,000+ sq. ft. machining, assembly and testing center, and an extensive product engineering and testing lab in its world headquarters in Cedar Falls, Iowa, USA. This level of vertical integration ensures maximum quality, ability to satisfy special needs, and to meet project schedules.

A: Industrial pumps are pumps used in more general applications like all varieties of refined fuels & lubricants, resins & polymers, alcohols & solvents, asphalt & bitumen, polyurethane foam, food products, paints & inks, soaps & surfactants, and heat transfer fluids.

A: Viking Pump"s positive displacement pumps displace liquid with each revolution of the internal pumping elements. This is done by trapping liquid between the pumping elements and a stationary casing. Depending on the application, a pump may need to be jacketed or electrically heated in order to keep a warm ambient temperature inside the pump to prevent the product from solidifying.

A: The price of a Viking industrial pump can span from as low as $500 to as high as $250,000. The price is largely dependent on the size and application in which it is being used. This is why our Viking experts work directly with you to evaluate your specific need so that we can recommend the pump that will give you the best return on your investment.

A: Viking industrial products are sold through our reliable distribution channel around the world. These distributors are trained in our product and can help install and service your pump. Find your area distributor by visiting https://www.vikingpump.com/contact.

A: Specifications can be found on the pump pages after clicking on the pump of interest. Additional specifications can be find in our related literature and catalog sections, also available on the pump pages.

The Positive Displacement Pump Training Course covers a large range of pump types like Gear Pump, Lobe Pump, Vane Pump, Screw Pump, Peristaltic Pump, Metering Pump, Power Pump, Diaphragm Pump, Piston Pump, Variable Displacement Pump, Beam Pump, Sucker Rod Pump, Hydraulic Pump, etc. with detailed pump classification.

The primary focus on graphics/animations in the training software course helps in very clearly understanding pump maintenance procedures, pump operating/working principle, and aids in pump repair. Included are animated explanations on all types of pumps like Gear Pump, Lobe Pump, Vane Pump, Screw Pump, Peristaltic Pump, Metering Pump, Power Pump, Diaphragm Pump, Axial Piston Pump, Swash Plate Piston Pump, Wobble Plate Piston Pump, Bent Axis Piston Pump, Radial Piston Pump, Variable Displacement Pump, Beam Pump, Sucker Rod Pump, Hydraulic Pump & Mud Pump. The positive displacement pump training program has a dedicated module to assist pump troubleshooting. Animated cut-sections gives a deep insight into pump operation and how pumps work.

Students, as well as maintenance and engineering personnel, and those who have not had formal training, will find that this computer-based training program on positive displacement pumps increases both their knowledge and confidence when performing maintenance. Those with previous training may find this program a good refresher and may learn some important information not covered in their original training.

The course on Positive Displacement Pumps is also available in a "Hardware Lock" licensing method. Many users have requested that they be able to use the software on multiple computers, i.e. when working with the program on the office computer and on the home computer. This Hardware Lock method allows users to install software on as many computers as they like. They need only enter the key on whichever computer they are currently wanting to use the software on. This copyright method also works great for the classroom environment.

- The guide is customized to troubleshoot problems on individual pump types.Symptoms:Rotary Pumps:- No Liquid Delivery- Insufficient Discharge Pressure- Insufficient Capacity- Starts, but Loses Prime- Excessive wear- Excessive Heat- Excessive Noise and vibration- Excessive Power Demand- Motor Trips- Elevated Motor Temperature- Elevated Liquid TemperatureReciprocating Pumps:- No Liquid Delivery- Insufficient Capacity- Short Packing Life- Excessive wear at Liquid End- Excessive wear at Power End- Excessive Heat at Power End- Excessive Noise and vibration- Motor Trips6. Conventional and Interactive Skill Tests with Evaluation

Liquid is allowed to flow into the pump as the cavity on the suction side expands and the liquid is forced out of the discharge as the cavity collapses. This principle applies to all types of Positive Displacement Pumps whether the pump is a rotary lobe, gear within a gear, piston, diaphragm, screw, progressing cavity, etc.

A Positive Displacement Pump cannot be operated against a closed valve on the discharge side of the pump, i.e. it does not have a shut-off head like a Centrifugal Pump does. If a Positive Displacement Pump is allowed to operate against a closed discharge valve it will continue to produce flow which will increase the pressure in the discharge line until either the line bursts or the pump is severely damaged or both.

Börger Rotary Lobe Pumps are self-priming, valveless, positive displacement pumps. Two synchronized rotors rotating against each other build chambers towards the pump casing. At the suction side the open chambers fill with the conveyed product. The product is displaced in the direction of the volume flow into the discharge side. The capacity is speed related and the flow is reversible. At standstill the rotors the pump nearly perfect seal.

For the customer, capital cost, energy consumption, maintenance and downtime as well as replacement part pricing levels compare excellently with all other displacement pumps.

The quench and control liquid filled intermediate chamber, between the pump casing and the timing gear, provides a high degree of safety and is supplied by Börger as standard.

Supplied as standard with strong mechanical seal in different constructions and materials, optional with multiseal or packing. The new DPL size double-acting mechanical seal is especially designed for pumping difficult and hazardous, often viscous media.

In this type of pump, fluid is carried between gear teeth and displaced when they mesh. The surfaces of the rotors cooperate to provide continuous sealing and either rotor is capable of driving the other.

One gear is driven by the shaft coupled to a driver. This gear drives the other gear. The rotation of the gears is such that the liquid comes into the inlet port and flows into and around the outer periphery of the two rotating gears. As the liquid comes around the periphery it is discharged to the outlet port. The flow of the pump is regulated by the size of the cavity (volume) between the teeth and the speed of the gears.

Slippage approaches zero at 5000 SSU. As the viscosity increases, the pump speed is lowered to allow the liquid to fill the space between the rotating teeth.

Most external gear pumps use spur, helical, or herringbone gears. The helical and herringbone gears will deliver more flow and higher pressure. They are quieter than the spur gears but may require more net inlet pressure than a spur gear.

The most common uses for these pumps are to supply fuel oil for burners, gasoline transfer, kerosene, fuel oil, and diesel oil. They are used for hydraulic devices such as elevators and damper controls. They also pump coolants, paints, bleaches, solvents, syrups, glues, lard, greases, asphalt, petroleum, and lube oils and are used in general industrial applications.

External gear pumps can handle small suspended solids in abrasive applications but will gradually wear and lose performance. Materials of construction are dictated by the application and are available in cast iron, ductile iron, bronze, cast steel, and stainless steel. Because of their broad application scope, numerous optional designs are available.

Rated (normal) performance range is 1 to 180 m3/h (5 to 800 gpm), 3.5 to 21 bar (50 to 300 psi), and 0.37 to 75 kW (0.5 to 100 hp). Small external gear pumps frequently operate at four-pole motor speeds (1800 rpm) and have operated at two-pole speeds (3600 rpm). As the pump capacity per revolution increases, speeds are reduced to less than 500 rpm. Operating speeds and flow rates are reduced as the fluid viscosity increases.

The internal gear pump is a rotary flow positive displacement pump design, which is well-suited for a wide range of applications due to its relatively low speed and inlet pressure requirements.

They are often a more efficient alternative than a centrifugal pump, especially as viscosity increases. Internal gear pumps have one gear with internally cut gear teeth that mesh with the other gear that has externally cut gear teeth. Pumps of this type are made with or without a crescent-shaped partition. Either gear is capable of driving the other, and the design can be operated in either direction. Designs are available to provide the same direction of flow regardless of the direction of shaft rotation.

As the gears come out of mesh on the inlet side, liquid is drawn into the pump. The gears have a fairly long time to come out of mesh allowing for favorable filling. The mechanical contacts between the gears form a part of the moving fluid seal between the inlet and outlet ports. The liquid is forced out the discharge port by the meshing of the gears.

Internal gear pumps are commercially available in product families with flows from 1 to 340 m3/h (5 to 1500 gpm) and discharge pressures to 16 bar (230 psi) for applications covering a viscosity range of 2 to 400,000 cSt (40 to 2,000,000 SSU). Internal gear pumps are made to close tolerances and typically contain at least one bushing in the fluid. They can be damaged when pumping large solids. They can handle small suspended solids in abrasive applications but will gradually wear and lose performance. Materials of construction are dictated by the application and include cast iron, ductile iron, bronze, cast steel, and stainless steel.

Small internal gear pumps frequently operate at four-pole motor speeds (1800 rpm) and have operated at two-pole speeds (3600 rpm). As the pump capacity per revolution increases, speeds are reduced. Larger internal gear pumps typically operate below 500 rpm. Operating speeds and flow rates are reduced as the fluid viscosity increases.

Pinion-drive internal gear pumps are a distinctive subclass with unique operating characteristics. They are typically direct-drive arrangements operating at two-, four-, and six-pole speeds for flows below 750 L/min (200 gpm) on clear to very light abrasion, low-viscosity, hydrocarbon-based fluids. They are available in single or multistage module designs capable of pressures to 265 bar (4000 psi).

Internal gear pumps are applied in petrochemical, marine, terminal unloading, asphalt, chemical, and general industrial applications for transfer, lubrication, processing, and low-pressure hydraulics handling a wide range of fuel oils, lube oils, and viscous chemicals (both corrosive and noncorrosive). Because of their broad application scope, numerous optional designs are available, such as close-coupled, abrasion resistant, and API Standard compliance considerations.

There are similarities and important differences between positive & non-positive displacement systems. It’s very important to be aware of which type of system you are dealing with!

Identical systems with one hardly workin" (left) and one workin" hard (right). Both systems still displace the same amount of fluid.Non-Positive Displacement PumpingA pump that is used to circulate coolant around an engine block, or a centrifugal pump used in an industrial plant to move fluid from one holding tank to another, is usually a non-positive displacement pump.

Pump running against a strong restrictionPumps and SlippageAt very high pressures, some slippage will occur as fluid finds a passage in the fine clearances between pump parts back to the inlet side of the pump. This reduces the overall efficiency of the pump.

Whenever a pump is putting out less than its maximum displacement, it is said to be "slipping". Slippage refers to the liquid that does not make it to the pump"s outlet.

Slippage in a positive displacement pump after severe damage. These pumps typically have little to no slippage if functioning correctly and are not overloaded.Non-Positive Displacement Pumping - ContinuedIn such a system, the rate of flow from the pump, (gallons per minute), changes as the restriction on the pump outlet is changed. In other words, if the pressure at the pump outlet is decreased, the flow rate will increase, and vice versa.This slippage is desirable in most simple transfer or circulation pump systems as it can help to limit the system pressures from rising to extreme and dangerous levels, and it helps to limit the amount of horsepower that is required by the prime mover (motor or engine).

Non-positive systems have their own problems related to fluid viscosity, system pressure and temperature, but they are somewhat different from a positive displacement pump.

A non-positive displacement pump can slip, making it a good choice for any application that does not put high pressure on the pump’s outlet.Non-Positive Displacement - ExampleIf you designed a lift where a hydraulic cylinder is extended by flow from a non-positive displacement pump, the performance would be terrible.

Hydraulic pumps come in different forms to accommodate a range of application requirements, from industrial die presses to heavy-duty off road equipment. One hydraulic system can vary greatly from another. For one system, a hydraulic piston pump may be the best solution, while a hydraulic gear pump may be better suited for a different one.

Powered by a hydraulic drive, a piston pump has a reciprocating positive displacement design to manage fluid flow. Pistons, or cylindrical elements within a cylinder block, create a vacuum, generated by a drive mechanism, that draws in fluid. The cylindrical chamber is pressurised by distributing energy into the fluid, compressing and forcing it towards the pump’s outlet.

Basic designs can generate about 4,000 psi, but pumps with up to 14,500 psi operating pressure are available. There are many different models that can displace a specific amount of fluid. Some allow you to adjust the displacement per revolution, which can make them more energy efficient. Piston pumps are relatively complex in design and expensive, but practical in energy-efficient applications that require high pressures and effective oil flow control.

A hydraulic gear pump is a lower-cost option, but it is quite durable, with many options available. The typical pressure rating is about 3,000 psi, but many displacement sizes and pressures can be found. Some gear pumps are rated as high as 4,500 psi, although additional valves will be needed in systems that require regular flow adjustments.

Gear pumps function by drawing fluid between their meshing gears. The adjacent gear teeth form chambers that are enclosed within the housing and pressure plates. A partial vacuum forms at the inlet where the gear teeth unmesh, allowing fluid to fill the space and be moved along the outer edge of the gears; as the gear teeth mesh again, fluid is forced out of the pump.

Both pumps use hydraulic fluid to transfer energy or generate mechanical force. Hydraulic piston pumps rely on reciprocating motion. Rotational forces are generated along an axis. Fixed and variable displacement pumps are available, as are different types, including axial, inline, bent-axis, plunger, and radial pumps, each with its own unique method of pushing fluid.

On the other hand, gear pumps move fluid via tightly aligned cogs that create suction to draw in and discharge fluid. Pumps with internal or external gears can be used, depending on the application requirements. Lobe, screw, and vane pumps are just some available types. A downside of using gear pumps is that additional devices are needed to control the desired amount of displacement, as they operate on fixed displacement only.

While gear pumps are available in a wide range of displacement sizes and pressures, and they suit various machinery applications, piston pumps offer the benefits of higher pressure ratings and are variable displacement and energy efficient. Rapid cooling means each pump is ready for the next operating cycle and can be serviced soon after shut-off.

Gear pumps typically don’t move more than 50 gallons per minute of fluid. On the other hand, some piston pumps can move hundreds of gallons per minute. Either one has advantages, depending on your hydraulic application.

Hydraulic pumps are available in different types, sizes, pressure ratings, and other specifications. It is important to choose the right pump for your hydraulic system. Gear pumps are suited for various types of machinery. Piston pumps are often found in oil field and agricultural applications, as well as in heavy-duty construction equipment. They are reliable and efficient, and they resist leakage at high speeds and pressures.

White House Products, Ltd. supplies, repairs, and maintains hydraulic gear pumps and hydraulic piston pumps from leading manufacturers. We can assist you in choosing a pump that meets your application requirements. Start browsing our catalog or register/login to view prices/availability and place an order. Contact us at +44 (0)1475 742500 for more information.

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.