... 24",DN50-600mm 2.Pressure:150-2500LB,PN6-25 Stainless Steel Welding Gate Valve 1.Size: NPS2"-24",DN50-600mm ... -2500LB,PN6-253.Material: Cast Iron,Carbon steel,Stainless Steel4.Operation: Hand wheel, gear, square head.5.Standard: GB,DIN,JIS ... .10/ANSI B16.50Specification: 1.Drivign manner: Spur gear transmission,Bevel gear transmission,Air driving,Take pneumatically manually,Hydrodynamic driving,Electric ...