Check valves are used to prevent backflow in reverse osmosis units. It allows water flow in one direction out of the RO membrane, thus protecting the membrane from backpressure. Quick connect fittings make it is easy to replace the same. This
Elbow Check Valve connects with the RO effluent (permeate) in RO Systems.
It Comes in a 1/4" Tube x 1/8" Nipple Pipe Thread (NPT).