3/4″ Double Block And Bleed Valve,Class 600#,RF*NPT,Lever Operation Material:LF3 Nominal Pressure:600# Nominal Diameter:3/4″*1/2″ End Sealing:RF/NPT Face To Face:280MM Working Temp.:-101℃~425℃ Test/Inspection:API598 End Connection:RF/NPT NACE:NACE 0175 PS:We can manufacture valves as customers’ requirements.