Wafer check valve is a kind of check valve (non-return valve), and it must be sandwiched between two flanges for installation. It is used to allow water to flow through it in only one direction, and its one or two clappers open to permit forward flow or close to block reverse flow.
Available size (Source 1 with double door)
| Size | L (mm) | Double door | Working pressure (psi) | Ref. No. |
|---|---|---|---|---|
| 2″ / DN50 / 60.3mm | 54 | Split-clapper | 300 | V5401 |
| 2-1/2″ / DN65 / 73.0mm | 60 | Split-clapper | 300 | V5402 |
| 3″ / DN80 / 88.9mm | 57 | Split-clapper | 300 | V5403 |
| 4″ / DN100 / 114.3mm | 67 | Split-clapper | 300 | V5404 |
| 5″ / DN125 / 141.3mm | 83 | Split-clapper | 300 | V5405 |
| 6″ / DN150 / 168.3mm | 95 | Split-clapper | 300 | V5406 |
| 8″ / DN200 / 219.1mm | 127 | Split-clapper | 300 | V5407 |
| 10″ / DN250 / 273.0mm | 140 | Split-clapper | 300 | V5408 |
| 12″ / DN300 / 323.8mm | 181 | Split-clapper | 300 | V5409 |
| 14″ / DN350 / 355.6mm | 184 | Split-clapper | 300 | V5410 |
| 16″ / DN400 / 406.4mm | 191 | Split-clapper | 300 | V5411 |
Note: The flanged end connection is available with ASME B16.42 Class 150, ASME B16.1 Class 125, or ASME B16.5 Class 150.
Available size (Source 1 with double door)
| Size | L (mm) | Single door | Working pressure (psi) | Ref. No. |
|---|---|---|---|---|
| 4″ / DN100 / 114.3mm | 108 | Swing | 300 | V5421 |
| 6″ / DN150 / 168.3mm | 95 | Swing | 300 | V5422 |
| 8″ / DN200 / 219.1mm | 95 | Swing | 300 | V5423 |
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