The 40 27-3010-00 Disconnect Check Valve mounts onto the gas in coupler to protect your system from unwanted back-flow, ensuring gas is the only thing flowing, and in the proper direction. 1/4" FFL in and 1/4" MFL out.
Add this inline check valve to allow gas to flow out without allowing liquid backflow into your gas system. Many manifolds and regulators already feature check valves, but this disconnect will keep liquid from ever entering your gas lines in the first place.The check valve can be added to any flared gas-in disconnect to protect your draft system and prevent beer from pushing back into your gas line.
At some point your keg will be pressurized more than the pressure in the gas system, whether because of different carbonation levels or the keg sitting at room temperature. This fitting will prevent liquid shoots from the keg into the gas line when you connect your gas in quick-disconnect.
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