Provide an additional source of propane to high-pressure appliances in your RV, or set up a dual source of fuel off a 20-lb. or larger propane cylinder. In most applications, the Stay Flow brass tee is used to connect to an existing bulk cylinder and the included 12-ft. hose securely attaches to the tee and a second bulk cylinder. Now, two gas sources are running from the tee for a long-lasting fuel source to your gas-powered appliances. The propane hose connects with 1"-20 male throwaway cylinder threads or 1"-20 female throwaway cylinder threads. The Stay Flow tee has 1"-20 male throwaway cylinder threads and/or 1”-20 female POL/Acme nut connections.