Propane Bottle Adaptor / Fitting, 1-20 Male threaded x 1/4 inch FNPT (female), internal O-ring, NO check valve.
Inlet: 1/4 inch FNPT.
Outlet: 1 inch-20 Male.
Features the type of OUTLET fitting you find on a disposable 1-lb propane bottle, sometimes referred to as a Colman or Primus type fitting.
Inside is a nylon bushing and O-ring to seal to the nipple on diposable propane cylinder fittings or appliances. For example, # F-144 fits onto it.
Straight Through Design, No Valve.