For Steam Pressure up to 1500 PSI Size of Connection: 3/4" NPT Male The steel valve is lever-operated, outside screw and yoke design, and is recommended for steam service up to 1500 PSI @ 600_F. Forged steel body to ASTM A105 Grade 1 specification. Stem and reversible seat Type 303 stainless. Stem and nipple packing rings are secured by identical two-bolt packing yokes. Quadruple stem thread permits full open or shut position in one-quarter turn. Bronze stem bushing prevents seizing, and is located outside of valve body, thus unaffected by high temperature or corrosive fluids. Bottom of lower valve contains 1/2" pipe tap and female socket weld connection for gauge blowdown. The EFI SG854 valves have 3/4" male pipe connections, while the EFI SG860 valves are fitted with ASA 3/4" - 900 lb. large male flanges. Special connections can be furnished on request. Complete set includes two 5-foot lengths of chain, with handles to indicate open or closed position o valves, as required by the ASME Boiler Code. When ordering: Specify EFI Model number, 3/4" threaded or flanged connection. Specify gauge centers, operating pressure and temperature. Warning: For use with POWER BOILER SATURATED STEAM APPLICATIONS ONLY. MODEL EFI SG STEEL GAUGE VALVES ARE NOT TO BE USED WITH SUPERHEATED STEAM.