A permeate pump is a special device for undersink reverse osmosis units that uses the hydro power of the brine (drain water), to pack the permeate (product water), into the storage tank. //

What's best about the permeate pump, though, is the increased efficiency. With a standard shutoff system, as the storage tank fills, the RO unit must push against an increasing amount of storage tank pressure. With the permeate pump, the unit is shielded from this pressure and the membrane works in a virtually pressure-free situation, even when the tank is almost full. //

ERP-500 — For membranes up to 50 GPD. $68.00