The models 3D/5D reciprocating pumps are three–plunger/five-plunger, single-acting positive displacement pimps in 18 fame series and more than 500 specifications, offering capacities from 0.5 to 250 m³/h, maximum pressure up to 63 MPa, and maximum power of 2000 kW.

The 3D/5D reciprocating pumps are suitable for the descaling system in small and medium-sized steelworks, for delivering methylamine, liquid ammonium and other corrosive liquids in the chemical processing, and for high-pressure water, acid and polymer injection into oilfield, widely used in pharmacy, power plant, light industry, environmental protection, and national defense and so on.

According to different requirements of customers, the D type pump can be developed into high-temperature, high-viscosity and liquefied gas type reciprocating pumps to meet the different driving types and displacements.

The pump unit is fully provided with necessary accessories and its function expands day by day. All kinds of intellectually controlled packaged equipment can be provided for customers.

Driven by motor or diesel engine, the pump can be changed in capacity by variable speed and frequency device, and operated locally or remotely by monitoring and detecting elements.

To provide safety valve, pulsation damper, pressure gage, Y-filter, stop valve and piping fittings according to customers’ requirements.

The complete design, supply, installation and commissioning of the descaling system for steelworks can be realized by disposing the descaling box, accumulator, self-cleaning filter, high-level water tank, hi-pressure air compressor, spraying valve, circulating valve block, lowest-level valve block, high/low pressure valves and piping fittings, and logical interlocking control system.

The complete design and supply of intellectualized skid-mounted equipment for injecting water, acid and polymer into oilfield can be realized by mounting the diesel engine, clutch, speed variation device, air compressor, cooling/lubrication system, and logical control system on a common skid base.