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ERP-1000 Permeate Pump Kit

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ERP-1000 Permeate Pump Kit
Temporarily Out Of Stock

The Permeate Pump operates as a non-electrical energy recovery device which dramatically improves the efficiency of RO systems. This kit will fit a standard 4 or 5 stage unit, including the WP-5, WP-4V or the RO-Pure. This Kit Includes 1/4 IN and 3/8 IN adapters.

Using only the available energy from the brine water (i.e. no electricity required), the pump forces the purified water into the storage tank. This process effectively reduces the membrane back pressure to less than 5 psi and allows the membrane to maximize its use of the available feed pressure.

The Permeate Pump can be easily retrofitted to upgrade virtually any existing RO system. The pump eliminates the need for hydraulic shutoff valves and can be used to replace booster pumps in well water applications. Works with all standard, manifold and RO-Pure units. Not Compatible with Systems utilizing ZeroWaste(R) or Booster Pump Technology.



  • Requires no electricity, powered by energy from brine water.
  • Improves recovery rates by as much as 400%.
  • Reduces waste water by as much as 80%.
  • Ideal for membranes rated from 10-100 GPD.
  • Effective for inlet water pressure as low as 40 psi.
  • Lowers "TDS creep" (Increases Membrane Life).
  • Fills product tank up to 4 times more rapidly.
  • NSF approved (Standard 58).


California Prop 65 Warning CALIFORNIA PROP 65 WARNING: This product can expose you to chemicals including formaldehyde, which is known to the State of California to cause cancer. For more information go to


Download the Installation Instructions here.


Note - Using this pump might increase the air gap noise that is created by the drain water.