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Granny Flat Pressure Pump with Rain to Mains Controller


2-4 taps.  25LPM @ 20m Head.  Max Flow = 55LPM

SKU: RM4000-PRJ052 Category:
Additional information

Granny Flat Pressure Pump

The Granny Flat Pressure Pump with Rain to Mains Controller has no cables, no float, no solenoid and no electronic controls making it extremely easy to install. The simplicity of this system has the added benefit of making it very affordable. The RM4000 Rain to Mains restricts flow of mains supply while rain water is in the tank. This system is suited for Granny Flat Pressure Pump with Rain to Mains Controller applications.

Model Number = RM4000 with PRJ052
Rated Flow = 25LPM @ 20m head
Max Flow = 55LPM
Max Head = 33m
Inlet / Outlet = 25FBSP / 25 MBSP
Warranty = 2 Years

Suitable Pressure Pump for

  • A Granny Flat, Small House or Cabin with one 1 Toilet
  • Pressure Boosting Applications
  • Domestic Laundry & Garden Taps
  • Clean Water Transfer

Features & Benefits

  • Watermark certified, includes dual check valve on mains to prevent back flow or cross contamination.
  • This system automatically checks for water periodically. If there is no water, the mains water flows.
  • Watermark dual check valve
  • No electrician required – just plug it in.
  • Reliable, efficient power-saving performance, an affordable solution for new or old houses.
  • Valveset is 100% hydraulic – no electronics.
  • Rains to Mains switch over system allows mains water to flow if tank water is unavailable, and
    stops mains flow if tank water is sufficient.
  • Run-dry protection and thermal overload protection for the Pump.


  • Only available as a package with pump cover.
  • RM4000 controller cannot be sold separately.
  • Valves assembled, supplied loose with pump









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