What is Piston Pumps
A piston pump is a type of pump that operates based on the reciprocating motion of a piston. It consists of a piston inside a cylinder. As the piston moves, it changes the volume of the chamber. When the piston moves to increase the volume, fluid is drawn in through an inlet valve. When the piston moves to decrease the volume, the fluid is pushed out through an outlet valve. Piston pumps are known for their high - pressure capabilities and are used in various applications such as in hydraulic systems and for pumping liquids in industrial settings.
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![Danfoss 90R Series Pump | 90R055 90R075 90R100 Piston Pump]()
Danfoss 90R Series Pump | 90R055 90R075 90R100 Piston Pump90R/90L series is mainly used in closed systems.The displacement of pump can be changed by swashplate swing Angle.
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![Danfoss H1P069 69cc Axial Piston Pump Variable Displacement Hydraulic Pump For Mobile Equipment]()
Danfoss H1P069 69cc Axial Piston Pump Variable Displaceme...Danfoss H1P069 is a 69cc variable displacement axial piston pump for closed circuit hydraulic systems. It is designed to provide high efficiency hydraulic power for mobile...
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![Rexroth A4VG40 Axial Piston Variable Pump Closed Circuit Hydraulic Pump For Excavator Loader Mining Machinery Drive System]()
Rexroth A4VG40 Axial Piston Variable Pump Closed Circuit ...It is a medium displacement closed-circuit axial piston pump used for stable power delivery in mobile machinery such as excavators, loaders, and mining auxiliary equipment.
With variable... -
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Rexroth A10VSO71 Series 31 Hydraulic Oil Pump For Excavat...Provides significantly higher displacement, suitable for systems requiring strong and continuous hydraulic power.
Performs reliably in equipment with long working hours and frequent load... -
![Rexroth A10FM63 63cc Fixed Displacement Axial Piston Hydraulic Motor For Heavy Machinery]()
Rexroth A10FM63 63cc Fixed Displacement Axial Piston Hydr...The Rexroth A10FM63 is a high-displacement fixed displacement axial piston motor for hydraulic power transmission. Its proven design provides reliable rotary output for high-speed and demanding...
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![Rexroth A10FM58 58cc Fixed Displacement Axial Piston Hydraulic Motor For Heavy Duty Equipment]()
Rexroth A10FM58 58cc Fixed Displacement Axial Piston Hydr...Rexroth A10FM58 is a 58cc fixed displacement axial piston hydraulic motor designed for reliable power transmission in demanding hydraulic applications. Its compact design and high-speed operating...
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![Rexroth A10FM23 23cc Fixed Displacement Axial Piston Hydraulic Motor For Mobile Equipment]()
Rexroth A10FM23 23cc Fixed Displacement Axial Piston Hydr...Rexroth A10FM23 is a compact fixed displacement axial piston hydraulic motor designed for high-speed hydraulic drives. Its proven swash plate design provides reliable rotary power, making it...
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![D1P290 Danfoss Piston Pump 290cc – 667 L/min Top Output]()
D1P290 Danfoss Piston Pump 290cc – 667 L/min Top OutputThe D1P290 extends the series beyond 260 cm³ with 290 cm³ of displacement and up to 667 L/min theoretical flow, the highest output configured in the D1P line according to 2024 Danfoss catalog...
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![Danfoss D1P260 Hydraulic Piston Pump 260cc, High Flow]()
Danfoss D1P260 Hydraulic Piston Pump 260cc, High FlowThe Danfoss D1P260 variable displacement pump is the largest standard size in the D1P series, featuring 260 cm³ displacement and theoretical flow up to 598 L/min. It is designed for high-flow...
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![Danfoss D1P193 Heavy Duty Piston Pump 193cc, SAE E Flange]()
Danfoss D1P193 Heavy Duty Piston Pump 193cc, SAE E FlangeThe Danfoss D1P193 variable displacement pump features 193 cm³ displacement, delivering 425 L/min in standard form and up to 483 L/min with an integral impeller. Its heavy-duty SAE E flange...
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![D1P160 Danfoss High Power Piston Pump 160cc – 400 L/min Flow]()
D1P160 Danfoss High Power Piston Pump 160cc – 400 L/min FlowThe Danfoss D1P160 variable displacement pump features 160 cm³ displacement and delivers up to 400 L/min at 2,500 rpm, offering high power density for demanding hydraulic systems.
Sharing... -
![Danfoss D1P145 Axial Piston Pump – 350 Bar, 145cc]()
Danfoss D1P145 Axial Piston Pump – 350 Bar, 145ccThe Danfoss D1P145 variable displacement pump features 145 cm³ displacement, delivering 319 L/min in standard trim and up to 363 L/min with a boost impeller.
Designed for demanding...
Your Professional Piston Pumps Supplier！
Hangzhou Pinxin Hydraulic Technology Co., Ltd. is an excellent enterprise specializing in hydraulic component trade, hydraulic system design and hydraulic transmission. The company has factories in Hangzhou, Shanghai, Nanjing and Hefei. Its main business areas are various types of engineering machinery and equipment, large industrial equipment and marine engineering.
Wide Range Of Products
Our company is committed to providing Rexroth brand hydraulic pumps, hydraulic motors, reducer assemblies, control valves, accessories, gear pumps and gear motors to the mid- and aftermarket.
After-sales Service
The product provides a one-year warranty service, 24-hour remote video technical guidance on weekdays, and free parts repair, grease injection, and cleaning under normal use during the warranty period.
OEM and ODM Available
We can customize and design products according to customer needs.
Quality Assurance
Our products have passed CE, RoHS and other certifications.
Features of plunger pumps
High Working Efficiency
The plunger pump has the characteristics of high rated pressure and high efficiency. Its pressure performance is excellent and can meet the needs of high-pressure systems.
01
Convenient Flow Adjustment
The flow of the plunger pump can be adjusted by changing the stroke or the number of pistons, and the operation is simple and flexible.
02
Good Sealing Performance
It can effectively prevent liquid leakage and ensure the stable operation of the pump.
03
Strong Adaptability To The Medium
In principle, the plunger pump can transport any medium, and is almost not restricted by the physical and chemical properties of the medium, and has a wide range of applicability.
04
Good Suction Performance
Because of its good self-priming performance, it is usually not necessary to fill the pump with liquid before starting.
05
Cylinder:
The piston reciprocates in it, thereby changing the volume of the sealed working chamber.
Piston:
Relies on the reciprocating motion in the cylinder to achieve oil suction and oil pressure.
Suction Valve And Discharge Valve:
Control the suction and discharge of oil.
Power Transmission Device:
Provides power for the reciprocating motion of the piston.
Oil distribution plate (for axial piston pump)
Used for oil distribution, cooperates with the rotation of the cylinder to achieve oil distribution.
Slipper and variable head (some types)
In axial piston pumps, used to achieve variable adjustment and static balance of oil.
Sealing device
Such as piston sealing device, to ensure that the oil does not leak during pumping.
Application of Piston pumps
Hydraulic system
Piston pumps are used in various hydraulic systems, such as industrial hydraulic equipment, heavy machinery, mining machinery, etc.
Oil and gas industry
In oil extraction and natural gas production, piston pumps are used to convey and improve the flow of oil and gas, especially in high pressure and high temperature environments.
Pharmaceutical industry
Plunger pumps are often used in the pharmaceutical industry to provide precise flow control to ensure the uniformity and stability of ingredients during the production process.
Chemical industry
In chemical processing, piston pumps are used to convey various fluids, including corrosive and viscous liquids.
Working principle of Piston pump
Suction stroke
When the plunger moves backward, the volume in the pump chamber increases, causing the internal pressure to drop. At this time, the inlet valve opens and the liquid is sucked into the pump chamber through the suction pipe.
Discharge stroke
When the plunger moves forward, the volume of the pump chamber decreases and the internal pressure increases. At this time, the inlet valve closes, and the liquid is forced out through the discharge valve and flows to the pipeline or storage container.
Function of the valve
The plunger pump is usually equipped with a one-way valve. The inlet valve and the discharge valve together ensure the one-way flow of the liquid, thereby preventing the liquid from flowing back.
Cycle process
As the plunger continues to reciprocate, the pump chamber continuously completes the cycle of suction and discharge, and continuously delivers the liquid.
Types of Piston Pumps
Single-acting Plunger Pump: This pump generates pressure and sucks liquid in only one direction in each working cycle.
Double-acting Plunger Pump: Unlike single-acting pumps, double-acting pumps can suck and discharge on both sides during reciprocating motion, which is more efficient.
High-pressure Plunger Pump: This type of pump is suitable for occasions where high-pressure delivery is required, such as water jet cutting, cleaning and other fields.
Quantitative Plunger Pump: This pump can provide a constant flow rate during operation and is commonly used in industries such as chemicals, pharmaceuticals and food.
Variable Plunger Pump: The variable plunger pump can automatically adjust the output flow rate according to the needs of the system and is suitable for application scenarios with large flow changes.
Hydraulic Plunger Pump: Commonly used in hydraulic systems, it can generate hydraulic energy through the movement of the plunger and is widely used in mechanical equipment and engineering machinery.
Gear Plunger Pump：This pump combines the advantages of plunger pumps and gear pumps and is suitable for the delivery of a variety of liquids.
Customized Piston Pump
Flow And Pressure Requirements
Determine the required flow and working pressure according to the specific application of the plunger pump. The plunger pump can provide high pressure and precise flow control, so these parameters must be clarified.
Material Selection
Select appropriate pump body materials and sealing materials according to the properties of the conveyed liquid (such as corrosiveness, temperature, etc.). Common materials include cast iron, stainless steel, alloy materials, etc.
Size And Installation Method
Customize the size and interface form of the plunger pump according to the space limitations of the installation environment to facilitate compatibility with the existing system.
Drive Method
The plunger pump can be driven by electric, hydraulic or mechanical drive.
Operating conditions
The plunger pump needs to consider the working environment of the pump, such as temperature, humidity, vibration, etc., and adjust the design accordingly.
Control system
The plunger pump can be customized with corresponding control systems, such as microcomputer control, variable frequency drive, etc., to achieve automation and precise control.
Accessories and services
When customizing the plunger pump, you can consider supporting parts and services, including filters, valves, monitoring instruments, etc., as well as after-sales maintenance services.
Special functions
If special functions are required (such as high temperature resistance, corrosion resistance, low noise, etc.), corresponding modifications and optimizations can be made in the design.
Frequently Asked Questions
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