$6.90

One Way Check Valve (8mm push in type)

Every keg setup should have one. This handly device will ensure you protect your regulator against reversal of flow in your lines.
This is a 8mm push in type so that if you are using 8mm OD (outer diameter) gas line the line then it will push directly into the fitting without the need for any clamps. PE hose is recommended for a pretty tight fit.

The one way check valve is 65mm long.
Note: the silver end is input and the black end is output