Patent ID: 7862710
Filing Date: 2011-01-04
Classification: B01D,C02F

Abstract:
1. A reverse osmosis (RO) system comprising: a housing; a pre-filter within the housing such that feed water flows into the housing and enters the pre-filter a membrane element within the housing such that the pre-filtered water flows from the pre-filter and enters the membrane element and permeate exits the membrane element through the housing; a faucet to dispense the permeate; a first end cap at one end of the membrane element such that feed water flows through the first end cap into the pre-filter; a second end cap at an opposing end of the membrane element, wherein concentrate flows from the membrane element into the second end cap and permeate flows from the membrane element into the second end cap; and a shut off valve within the second end cap such that permeate and concentrate from the membrane element flow through the shut off valve, wherein the shut off valve allows concentrate to flow from the membrane element only when permeate is flowing from the membrane element and through the faucet.