An MFL Check Valve to prevent backflow, with 1/4″ FFL outlet x 1/4″ MFL Inlet.Use this check valve on ball lock gas connectors with MFL thread. Its internal mechanism prevents accidental back-flow of beer into the gas line on your kegging set up.Stainless steel 304Made for gas connectors with 1/4″ MFL threadsPrevents liquid from entering your gas linesPermanent markings show flow direction
