Plunger Pump

Product Description

 

The plunger pump is a horizontal reciprocating positive-displacement pump engineered for the highest-pressure cryogenic duties, using a plunger with a crank-connecting rod drive to reach discharge pressures from 25 to 100 MPa. It handles LNG, liquid nitrogen, liquid argon and liquid oxygen at temperatures down to -196°C with flow rates from 0.4 m³/h up to 40 m³/h. Plunger construction concentrates the sealing elements on the stationary stuffing box, which simplifies high-pressure sealing and improves packing life in cryogenic service. The stationary stuffing box arrangement makes packing maintenance predictable and keeps the high-pressure sealing point accessible, which matters for plants that operate the pump in continuous duty. Flow is controlled through stroke and speed, providing the precise dosing that dense-phase applications require. The horizontal configuration also simplifies alignment and access to the valve assemblies during maintenance. For plants with defined duty cycles, the technical file documents start-stop behavior and suction conditions. Pump and driver alignment is simplified by the horizontal configuration, reducing installation time.

Plunger pumps are specified for the most demanding pressure points, so the complete high-pressure fluid end is manufactured from materials validated for both low temperature and elevated stress, with plungers, cylinders and valve assemblies precision-machined to tight tolerances. We review the duty point, packing concept and drive arrangement before production, and every pump is 100% performance-tested at pressure before shipment. The same engineering and production team builds our cryogenic, marine and expander products, giving you a single qualified supplier for the cold chain. We review the packing concept, plunger material and pressure class against the medium and duty before production, and the machine is 100% performance-tested at the specified discharge pressure. Technical documentation, installation guidance and spare-parts support are provided according to the contract. The same engineering and production team builds the full cryogenic product line, giving a single qualified supplier for the cold chain.

Customization

 

Plunger diameter, stroke and speed, pressure class, packing concept and interfaces are customized around the duty. OEM and build-to-spec production supported after engineering review.

one-stop solution

professional team

high quality

Dedicated wooden crates with moisture, rust and shock protection and fixed internals are used for export shipment. FCA or FOB terms are standard. Custom-engineered pumps have a typical lead time of 32 weeks from technical approval.

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