Manufacture of different inclined shaft variable piston pumps to meet the different requirements of different hydraulic systems. In practice, this means that the correct pump for one system or purpose may not be suitable for another system or purpose. This type of hydraulic pump we provide as described below. If you need us to build a new pump for your system or to maintain or repair existing equipment, we also offer a range of piston pumps, and we can also produce to order. Our Qidong Jiasheng High Pressure Oil Pump Co., Ltd.'s hydraulic gear pumps are durable, low cost, and capable of providing displacement and pressure. Normally, gear pumps have a large working pressure of about 3,000 psi (206 bar), but they can be rated up to 4,500 psi (310 bar). In our comparison of hydraulic pump types, it is important to note that gear pumps can only have fixed displacement. If the hydraulic system needs to process different amounts of fluid through it at different times, a valve is needed to control the flow, or a variable displacement piston pump can be used. We also offer them high ratings, including 14,500 psi piston pumps (those up to 1,000 bar). The amount of fluid that a piston pump can move varies greatly depending on the model. In addition to being able to pump at higher pressures, the displacement per revolution of some piston pumps can be effectively adjusted, which allows for more efficient use of energy than fixed displacement gears or piston pumps. Piston pumps have proven to be more complex and therefore more expensive than gear pumps; however, where high pressures and effective oil flow control are required, it is often worthwhile to use a piston pump instead of a gear pump from an energy efficiency point of view.