1/4-inch Quick Connect x 1/8-inch NPT Elbow CHECK VALVE Fitting for Membrane Housing

Used on reverse systems to prevent backflow into the membrane element. When this part malfunctions, it can allow the tank to empty back through the membrane and down the drain line. Product Features Stainless Steel The check valve components are made of high quality stainless steel 1/8" Threaded Connects directly to most membrane housings 1/4" Quick Connect Fits standard tubing used on RO systems Elbow Fitting 90-degree angle allows for tight fits Product Description Reverse osmosis systems used with an auto shut off valve require a check valve to prevent backflow. This allows pressure to build up so the auto shut off can activate and shut the system off. Systems that continually run water down the drain may be missing the check valve, and systems that intermittently turn on without any water use may indicate a worn check valve More Info