FULL BORE OPENING, FAST CLOSING CUT-OFF WITH INFLATABLE SEAL MECHANISM, 2-WAY PNEUMATIC ACTUATED, CAST STAINLESS STEEL CONSTRUCTION WITH A MACHINED INLET BULKHEAD. INLET FLANGE: 4"Ø ANSI 150, DISCHARGE FLANGE: 6"Ø ANSI 150. OVERALL HEIGHT: 9.5". MAX. OPERATING TEMP: 392°F, MAX. OPERATING PRESSURE: 100PSI. VALTAC PNEUMATIC ACTUATOR.