1082 Cast Iron Dual Plate Wafer Type Check Valve, PN 16

1082 Cast Iron Dual Plate Wafer Type Check Valve, PN 16

Salient Features
  • Design standard API 594.
  • Wafer Type Design, to take lesser space than the conventional Check Valve.
  • Being light in weight, is more rigid than the standard Swing Type Check Valve, which needs expensive foundation and special supports.
  • Being cylindrical body, stresses are uniformly distributed.
  • Much longer seat life because of Bronze / S.S to Rubber contact.
  • Less wear and tear of seat surfaces.
  • End connections are designed to suit flanges drilled to ANSI B Class-125 / ASME B Class-150.
  • Water hammering effect is minimized in this design, since the closing of valve does not depend upon any back pressure or flow.
  • Each plate being half of the size of the swing check valve disc, provides straight flow path offering minimal resistance because of the spring’s assistance as closing of the valve initiates as soon as flow velocity dips below the designated minimum velocity.
Test Pressure (Hydrostatic) :
  •  Shell : 24.50 kg/cm²g (350 psig)
  •  Working Pressure (Steam) : 16 kg/cm²g (230 psig)
  • Maximum Working Temperature : 80°C

Materials

P.No.Name of PartMaterial of ConstructionSpecificationQty.
1BodyCast IronIS 210 Gr. FG 2001
2Body LiningNitrile RubberIS 5192 – 11
3Flap / DiscStainless Steel / BronzeASTM A 351 Gr. CF8/CF8M / IS 318 Gr. LTB22
4Hinge PinStainless SteelASTM A 276 Type 3041
5Stop PinStainless SteelASTM A 276 Type 3041
6SpringStainless SteelType 304 –
7Packing WasherStainless Steel/PTFEASTM A 276 Type 304 /  – – – –
8Packing WasherNitrile Rubber / PTFEIS : 5192-1 / – – – –
9Retainer PlugCarbon Steel – – –2/4

Material Diagram

Sizes / Dimensions

Size (Inches)Size (mm)AØBØC
1 1/240509256
2505410160
2 1/2656012073
3806713389
410067171114
512583193141
615095218168
8200127276219
10250140336273.5
12300181406324
14350184451357