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 | Flanged |
| Pressure Rating | 365PSI |
| 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.
Flanged NSC-F swing check valve with a ductile iron body and EPDM disc seal for preventing reverse flow in fire protection water systems. The DN50-DN300 range is catalogued at 365 PSI; match flange drilling and face-to-face length to the installation.
Applications: Fire protection
For technical documentation or assistance with your selection, contact Nordic Valves.
Flanged NSC-F swing check valve with a ductile iron body and EPDM disc seal for preventing reverse flow in fire protection water systems. The DN50-DN300 range is catalogued at 365 PSI; match flange drilling and face-to-face length to the installation.
FM Certificate of Compliance: FM 1210. Approval identification PR468420, granted 1 March 2024.
| Component | Material | Specification |
|---|---|---|
| Body, cover, clapper and clapper arm | Ductile iron | ASTM A536 65-45-12 |
| Disc seal | EPDM | - |
| Hinge pin | Stainless steel | AISI 304 |
| Seat | Bronze or stainless steel | ASTM B62 or AISI 304 |
Range-sheet material options require confirmation for the selected valve construction. View the source drawing and table.
| Size | Size (inch) | L (mm) | H (mm) |
|---|---|---|---|
| DN50 | 2 | 203 | 122 |
| DN65 | 2 1/2 | 254 | 133 |
| DN80 | 3 | 279 | 136.5 |
| DN100 | 4 | 330 | 219.5 |
| DN125 | 5 | 356 | 296 |
| DN150 | 6 | 406 | 298.5 |
| DN200 | 8 | 495 | 357 |
| DN250 | 10 | 559 | 410 |
| DN300 | 12 | 660 | 463 |
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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