CNP Pump DRL constant pressure frequency conversion water supply system is composed of newest great performance PID frequency conversion controlling cabinet and more than 2 pumps. It is the top technical water boosting equipment, which can automatically adjust to satisfy the requirement of constant pressure, variable water demand. 

The pressure of water supply net can be kept constant. The whole water supply system can be at best effective, energy saving, perfect status. There are two ways of water supply, they are frequency convention water supply and pressure water supply. Frequency water supply is automatically adjust the rotation speed of one pump or run/stop one or more pumps, which is the best water supply way to keep the water supply net to be stable. It is easy to use.


  • Solve the low pressure problem
  • To avoid the pollution of the tank on the top of the roof.
  • Deduce the building cost, enlarge the square
  • Energy saving, deduce the space
  • High quality, PC controls: Invented by us, have multi-function, can supply high standard precise control.


  • Residential building
  • Social facilities
  • Commercial building
  • Industrial water supply


Performance range:

  • Capacity: Q up to 1080m3/h
  • Head: H up to 305m
  • Temperature: T up to 1200C
  • Speed: n 2900rpm, 3500rpm


Standard material:

All the wet parts are made of 304 stainless steel.



  • The system included pumps ( 2 to 5 pumps ).
  • Booster control panel with variable speed PID controller.
  • Pressure gauge, valves, pipe, water tank and base.
Flow Rated
2 ~ 500 m³/h
Total Head
8 ~ 300 m
Liquid Temperature
-15°C ~ +70°C
Stainless Steel 304 / 316
Type Max Flow Head
[m³/h] [m]
2 DRL 200 76
3 DRL 300 76
4 DRL 400 76
5 DRL 500 76

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