Cast Iron Dual Plate Wafer Type Check Valve, PN 16
Mixed ends · Water
API 594Shell 24.50 kg/cm²g (3Max 80°C
Overview
Cast Iron Dual Plate Wafer Type Check Valve, PN 16 for water service. Design per API 594. End connection: mixed ends. Refer to bill of materials and dimensions below for full technical specification.
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 & Service Limits
| Test / Parameter | Value |
|---|---|
| Hydrostatic shell test | 24.50 kg/cm²g (350 psig) |
| Hydrostatic seat test | 16 kg/cm²g (230 psig) |
| Maximum working temperature | 80°C |
Service media: Water.
Bill of Materials
| P.No. | Part | Material | Specification | Qty. |
|---|---|---|---|---|
| 1 | Body | Cast Iron | IS 210 Gr. FG 200 | 1 |
| 2 | Body Lining | Nitrile Rubber | IS 5192 – 1 | 1 |
| 3 | Flap / Disc | Stainless Steel | / Bronze ASTM A 351 Gr. CF8/CF8M / IS | 1 |
| 318 | Gr. LTB2 2 | — | — | 1 |
| 4 | Hinge Pin | Stainless Steel | ASTM A 276 Type 304 | 1 |
| 5 | Stop Pin | Stainless Steel | ASTM A 276 Type 304 | 1 |
| 6 | Spring | Stainless Steel | Type 304 | – |
| 7 | Packing Washer | Stainless Steel | PTFE ASTM A 276 Type 304 / – – – | – |
| 8 | Packing Washer | Nitrile Rubber | PTFE IS : 5192-1 / – – – | – |
| 9 | Retainer Plug | Carbon Steel | – – – 2 | 4 |
Sizes / Dimensions
| Size (Inches) Size (mm) A | ØB | ØC | ||||||
|---|---|---|---|---|---|---|---|---|
| 1 | 1/2 | 40 | 50 | 92 | 56 | |||
| 2 | 50 | 54 | 101 | 60 | ||||
| 2 | 1/2 | 65 | 60 | 120 | 73 | |||
| 3 | 80 | 67 | 133 | 89 | ||||
| 4 | 100 | 67 | 171 | 114 | ||||
| 5 | 125 | 83 | 193 | 141 | ||||
| 6 | 150 | 95 | 218 | 168 | ||||
| 8 | 200 | 127 | 276 | 219 | ||||
| 10 | 250 | 140 | 336 | 273.5 | ||||
| 12 | 300 | 181 | 406 | 324 | ||||
| 14* | 350* | 184 | 451 | 357 | ||||
| *Flap | / | Disc | for | Size | 350 | is | of | Bronze. |
Dimensions per datasheet table. Confirm flange standard and size at enquiry.