If you are not using a gas manifold with 1/4" Check Valves, then we strongly recommend this handy valve. This push in valve will protect your regulator from the dreaded back flow if an accident every did happen. Used only the gas side, it will not work with liquid.

The Red end is the output direction of gas.

Fits 8mm OD gas line without the need for clamps.

This item has been superseded by the duotight - 8mm x one way check valve.

One Way Check Valve - Push In (Gas)
If you are not using a gas manifold with 1/4" Check Valves, then we strongly recommend this handy valve. This push in valve will protect your regulator from the dreaded back flow if an accident every did happen.

Fits 8mm OD gas line without the need for clamps.

The small rube below the push in fitting is so that it can be mounted or suspended via a zip tie / string.

Used only the gas side, it will not work with liquid.

The Red end is the output direction of gas.