Worm Gear Class150 48” Buttwelding Triple Offset Butterfly Valves Material:WCB Nominal Pressure:CL 150 Nominal Diameter:DN 1200 End Connection:BW Operation:Worm Gear Working Temp:-100℃~750℃ Test/Inspection:API 598/ISO 5208 NACE:NACE 0175 PS:We can manufacture valves as customers’ requirements.