... 24",DN50-600mm 2.Pressure:150-2500LB,PN6-25 Stainless Steel Welding Gate Valve 1.Size: NPS2"-24",DN50 ... -253.Material: Cast Iron,Carbon steel,Stainless Steel4.Operation: Hand wheel, gear, square head.5.Standard: GB,DIN,JIS, ... ,Double-disc.4.Sealing formation:Hard alloy,Alloy steel.Feature:1.Both design and manufacture are carried out ... the type of powder and slurry fluid Stainless Steel Welding Gate Valve