Flow direction & closure
Define flow rate, installation orientation and allowable pressure loss. Include reverse-flow conditions and the required closing behaviour.
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| Available Sizes | DN50-DN300 |
|---|---|
| Connection Type | Wafer |
| Pressure Rating | 300PSI |
| Body Material | Ductile Iron |
| Working Temperature | -10 - 120°C |
| Size | DN50 · DN65 · DN80 · DN100 · DN125 · DN150 · DN200 · DN250 · DN300 |
| Approvals | FM |
Catalogue options. Operating limits depend on the selected size, materials and configuration.
NSC-W dual-disc wafer check valve for preventing reverse flow in fire protection water systems. The catalogue configuration has a ductile iron body, DN50-DN300 sizes and a 300 PSI rating; the supplied datasheet identifies API 594 design and ANSI Class 125/150 mating flanges.
Applications: Fire protection
For technical documentation or assistance with your selection, contact Nordic Valves.
NSC-W dual-disc wafer check valve for preventing reverse flow in fire protection water systems. The catalogue configuration has a ductile iron body, DN50-DN300 sizes and a 300 PSI rating; the supplied datasheet identifies API 594 design and ANSI Class 125/150 mating flanges.
FM Certificate of Compliance: FM 1230. Approval identification PR468420, granted 1 March 2024.
| Component | Material | Specification |
|---|---|---|
| Body (catalogue configuration) | Ductile iron | ASTM A536 65-45-12 |
| Disc options in the range sheet | Ductile iron / aluminium bronze / stainless steel | ASTM A536 / B584 C95400 / A351 CF8 / A351 CF8M |
| Stem | Stainless steel | AISI 316 |
| Seat-ring options in the range sheet | EPDM / NBR | - |
| Spring options in the range sheet | Stainless steel | AISI 316 / AISI 304 |
Range-sheet material options require confirmation for the selected valve construction. View the source drawing and table.
| Size | Size (inch) | H (mm) |
|---|---|---|
| DN50 | 2 | 54 |
| DN65 | 2 1/2 | 60 |
| DN80 | 3 | 67 |
| DN100 | 4 | 67 |
| DN125 | 5 | 83 |
| DN150 | 6 | 95 |
| DN200 | 8 | 127 |
| DN250 | 10 | 140 |
| DN300 | 12 | 181 |
Dimension symbols match the drawing in the linked datasheet. Values are specific to this connection and model. View the source drawing and table.
Supervised isolation, check valves and sprinkler heads. Match the component to the system specification.
Explore application guidanceDefine flow rate, installation orientation and allowable pressure loss. Include reverse-flow conditions and the required closing behaviour.
Specify the system pressure, installation position and connection. Confirm the supervision arrangement where applicable and the product approvals required by the project.
Include the required installation drawing, material documentation and testing requirements. Confirm the final configuration and its operating limits with your enquiry.
Include the operating conditions in your enquiry. Add your medium, pressure, temperature and documentation requirements alongside the selected options.
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