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There are many different kinds of hydraulic pumps, and there are two main categories into which all hydraulic pumps can be divided. The first category involves hydraulic pumps that operate independent of auxiliary power sources like gas and electric motors. These hydraulic pump varieties can make use of a liquid’s kinetic energy in order to move it from one place to another. Read More…

Hydraulics Pumps Hydraulics" is the field of study related to the mechanical properties of liquid. Pumps that are said to be hydraulic are so named because of they take advantage of the mechanical properties of liquid in order to achieve work; all hydraulic pumps have that quality in common.
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Leading Manufacturers

Grand Rapids, MI  |  616-949-6500

Since 1916, Kawasaki Precision Machinery has been providing high quality hydraulic pumps. We serve markets around the world, and are dedicated to providing you with best service available. Our talented engineering staff creates the best quality products and is determined to meet your every need and requirement. Call one of our friendly customer service representatives today to learn more!

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Kawasaki Precision Machinery (U.S.A.), Inc. $$$

Newmarket, ON  |  888-334-3348

We are a family-owned-and-operated company that has manufactured pumps since 1906. Some of the products we make & distribute include hydraulic pumps, hydraulic gear pumps, high pressure pumps; as well as centrifugal, stainless steel or plastic gear, hydra-cell, turbine, multistage & hand test pumps. At Albany Pump Company we manufacture/distribute pumps for any application & parts and accessories.

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Albany Pump Company Ltd. $$$

Conroe, TX  |  936-494-2000

Having innovative solutions for mission-critical applications makes Hydraulics Technology the preferred. For over 25 years, our impressive list of hydraulic pumps has met the needs of various applications. In assuring the highest quality products to our customers and meeting their expectations, Hydraulics Technology maintains ISO Certification. HTI is ISO 9001:2008 Certified.

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Hydraulics Technology, Inc. $$$

Buffalo, NY  |  800-895-4326

Huge stock of brand name hydraulic pumps, motors & related components for fast delivery: fixed & variable displacement motors, variable pumps, gear pumps & motors, high pressure pumps & motors, plus in-house design & engineering of custom hydraulic systems and 150 & 400 HP testing. Trusted for superior products!

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Lifco Hydraulics $$$
placeholder image Kawasaki Precision Machinery (U.S.A.), Inc. Albany Pump Company Ltd. Hydraulics Technology, Inc. Lifco Hydraulics

These pumps are usually called ram pumps, but they also sometimes go by other names; hydraulic hand pumps, for example, are never referred to as ram pumps, though both machines' principle of operation is similar. Ram pumps are increasingly popular in the developing world because they can be used, without the use of fuel or electricity, to pump water from rivers, streams or other sources to places where it is needed.

Because fuel and electricity can be scarce or expensive in many parts of the developing world, ram pumps are a very attractive water pumping solution. The other main category involves hydraulic pumps that make use of auxiliary power sources. These pumps are often used for the transmission of hydraulic fluids in machinery as well as in some other uses, such as in pressure washers.

The first category of hydraulic pumps harnesses natural forces and the kinetic energy of the fluids involved in pumping. In a ram pump for example, an inlet pipe on slight decline directs water away from its source and into the pump reservoir. As the water flows into the reservoir, the force of gravity and the water's kinetic energy cause pressure to build up. When sufficient pressure is built, a valve above the reservoir opens, which allows for the pressurized water to flow out into a pressure chamber.

The water in this chamber becomes further pressurized, which eventually forces it out of the chamber and into a tube that ultimately directs the water to its final destination. Relief valves and pressurized air are also involved in this process in order to avoid bursting pipes or ruptures in the pumps' reservoirs. The second category involves drawing hydraulic fluids like oil out of a reservoir and into a hydraulic system. This process usually involves cylinders and a series of tubes through which the fluid travels and is subject to varying levels of pressure.

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