Piston Pump

Product Description

 

The piston pump is a horizontal reciprocating pump for high-pressure cryogenic liquid service, using a piston driven through a crank-connecting rod mechanism to generate discharge pressures up to 100 MPa. It is built for LNG, liquid nitrogen, liquid argon and liquid oxygen transfer at temperatures down to -196°C, with flow rates from 0.4 m³/h up to 40 m³/h. The positive-displacement action delivers a stable, predictable flow characteristic that is insensitive to downstream pressure, which makes it suitable for high-pressure filling, injection and booster duties. The crank-connecting rod drive provides a controlled stroke cycle, and the flow can be regulated by speed or by adjustment of the drive configuration. This makes the piston pump a robust solution for booster and injection duties where the discharge pressure is not fixed by the upstream system. The positive-displacement characteristic also gives predictable dosing behavior, which matters for high-pressure filling and test loop services. The machine is also suitable for high-pressure test loops where predictable dosing is required.

At pressures up to 100 MPa, component accuracy and material integrity determine service life, so pistons, cylinders and valve assemblies are precision-machined and validated for cryogenic and high-pressure duty. Our engineering team reviews the operating conditions and confirms the drive configuration and sealing concept before production. Every pump is 100% performance-tested before shipment, and our 20,000 m² facility in Hangzhou's Fuyang district, with an annual capacity exceeding 1,000 units across our product range, supports both custom-engineered and series machines. The high-pressure fluid end is designed from the duty point, with plunger, cylinder and valve assemblies sized for the required pressure class. Every pump is 100% performance-tested at pressure before shipment, and the complete test report, material certificates and inspection records are delivered with the unit. Our engineering team reviews the duty point and sealing concept before production, and OEM cooperation is supported.

Customization

 

Plunger/piston size, drive configuration, pressure class and interfaces are customized around the duty point. OEM and build-to-spec production supported after engineering review.

one-stop solution

professional team

high quality

Export packaging uses dedicated wooden crates with moisture, rust and shock protection and fixed internals. FCA or FOB terms are standard. Custom-engineered pumps have a typical lead time of 32 weeks from technical approval.

Hot Tags: piston pump, China piston pump manufacturers, suppliers, factory, Cryogenic Reciprocating Pump, High Pressure Reciprocating Pump, marine reciprocating pump, reciprocating cryogenic pump, Reciprocating Pump in Ship, shipboard reciprocating pump