DIN Bellows Seal Gate Valve Design Standard:API 600/ASME B16.34 Material:Carbon steel,Stainless steel,Alloy steel Nominal Pressure:Class 150~2500（PN10-PN420） Nominal Diameter:1/2″~60″（DN15-1500） Operation:Manual， Worm Gear，Pneumatic， Electric End Connection:RF, RTJ, BW Face To Face:ASME B16.10 Working Temperature:-110℃~+560℃ Test And Inspection:API 598 End Connection:ASME B16.5,ASME B16.47 NACE:NACE 0175 PS:We can manufacture valves as customers’ requirements.