1 1/2"Ø DIAPHRAGM QUICK OPENING AND CLOSING VALVE, CLASS 150#, WITH PRESSURE REDUCER, NICKEL-ALUMINUM BRONZE BODY AND COVER ASTM B148; FLEXIBLE REINFORCED ELASTOMER DIAPHRAGM ASTM D 2000, STAINLESS STEEL INTERNAL. ASTM A 182 GR. F 316 (UNS S31600), CLASS VI HERMETIC SEAL ANSI/FCI 70-2-2006, FEMALE THREADED NPT CONNECTIONS, INCLUDES LOCAL MANUAL HYDRAULIC CONTROL TRIM IN STAINLESS STEEL ASTM A269 GR. TP.316. LISTED BY UL AND/OR FM APPROVED FOR FIRE SERVICE."FIRE TEST" UNDER ISO 6182-5 STANDARD