This Dixon RMS31 fitting is the stem for a steam hose coupler connection. It is made of 316 stainless steel for strength and resistance to corrosion. It has a barb on one end for fitting a hose with a 2-1/2" inner diameter (ID) and a 2-1/2" connection on the other end for a matching female spud. It has a polymer seat for resistance to most chemicals found in manufacturing facilities. This stem is suitable for use in steam service with a maximum temperature of 450 degrees F and should be used with boss clamps.Hose fittings connect, control, change the direction of, and terminate the flow in piping and hose systems. They are made of brass, stainless steel, galvanized steel, and other materials that resist corrosion, pressure, and wear. Hose fittings have various types of connections, including threaded, barbed, push-to-connect, dry disconnect, and others including those based on internationally-accepted specifications. Hose fittings are used in systems such as air compressors, automatic manufacturing operations, aircraft controls, and tire installation in industries including agriculture, mining, road construction, firefighting, and aviation.Dixon Valve & Coupling Company manufactures pipe and hose fittings and accessories. The company, founded in 1916, is headquartered in Chestertown, MD.