... ",DN50-600mm 2.Pressure:150-2500LB,PN6-25 Stainless Steel Welding Gate Valve 1.Size: NPS2"-24",DN50-600mm 2.Pressure ... type: Flange,Interior whorl,Other whorl,Welding,Bear and insert welding.3.Design feature: Single-disc,Double-disc.4.Sealing formation:Hard alloy,Alloy ... of the type of powder and slurry fluid Stainless Steel Welding Gate Valve