Automatic Shut Off Valve with 1/4 Inch tube Quick-Connect Fittings For RO Reverse Osmosis system refrigerator ice maker coffee machine

Auto shut off valve for Reverse Osmosis water systems.This product is colorless and tasteless, without adding corrosion material, it will not cause harm to human body. 1/4 inch fast interface, Easy to install, very convenient!And it's not easy to get out The "in & out" markings are on the top of the valve. The top side of the valve is the high pressure side and the bottom side is the low pressure side. The high pressure from the filter housings goes to the "in" on the top of the valve. Then the high pressure "out" goes to the membrane housing inlet. The membrane housing low pressure outlet connects to the "in" on the bottom side of the valve. The "out" on the bottom goes to the tank.