The NIBCO® UL/FM Angle valves are used in many places on a fire protection system. The connection points are for the firefighters to tap into the water supply anywhere in a building. Overview   300 PSI Full Port Pressure UL Listed, FM Approved Wafer Connection EPDM Rubber Seat+H23Forged Brass with Cap and Chain 21/2″ NPT x 21/2″ NPT Female Outlet, Brass