the permeate pump will also improve the life of your prefilters and booster pump

Water produced under the low water pressure conditions is much lower quality thus higher in TDS

5" diameter bottom plate

If you plan on using more RODI water than RO drinking water

Solenoid Valve 3/8" 10.7gal/16"x26" the permeate pump will alsoSolenoid Valve 3 8 " This solenoid valve is intended for auto fast flush or auto shut off applications. Just push the tubing in, connect to your timer or other power source and enjoy. NOTE: You will need a timer or other power source. No power plug or timer is included with this product. Weight: 5 oz Dimensions: H 2. 625" X W 1. 5" (2. 75" with fittings) X D 1. 1875"