Isolation & access
Specify the open/closed isolation duty and operating arrangement. Check installation dimensions, stem clearance and access for operation and maintenance.
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| Available Sizes | DN50-DN300 |
|---|---|
| Connection Type | Flanged x Grooved |
| Pressure Rating | 300PSI |
| Body Material | Ductile Iron |
| Working Temperature | -10 - 120°C |
| Size | DN50 · DN65 · DN80 · DN100 · DN125 · DN150 · DN200 · DN250 · DN300 |
| Approvals | FM |
| Stem Design | Outside screw & yoke (OS&Y) |
Catalogue options. Operating limits depend on the selected size, materials and configuration.
NSG OSY ductile iron gate valve with an outside screw and yoke with a rising stem and flanged x grooved ends for fire protection and sprinkler water isolation. The catalogue range is DN50-DN300 at 300 PSI; specify the connection standard and required operating or supervisory arrangement.
Applications: Fire protection
For technical documentation or assistance with your selection, contact Nordic Valves.
NSG OSY ductile iron gate valve with an outside screw and yoke with a rising stem and flanged x grooved ends for fire protection and sprinkler water isolation. The catalogue range is DN50-DN300 at 300 PSI; specify the connection standard and required operating or supervisory arrangement.
FM Certificate of Compliance: FM 1120 / FM 1130. Approval identification PR468420, granted 1 March 2024.
| Component | Material | Specification |
|---|---|---|
| Body and bonnet | Ductile iron | ASTM A536 65-45-12 |
| Wedge | EPDM-coated ductile iron | Resilient seated |
| Disc nut | Bronze | ASTM B62 |
| Stem | Stainless steel | AISI 304 |
| Gasket | EPDM | - |
| Thrust collar | Bronze | ASTM C51100 |
| Gland, wrench nut and post plate | Ductile iron | ASTM A536 65-45-12 |
Material reference for the OS&Y construction and connection shown in the linked datasheet. View the source drawing and table.
| Size | Size (inch) | L (mm) | H (mm) | D (mm) |
|---|---|---|---|---|
| DN50 | 2 | 178 | 409 | 160 |
| DN65 | 2 1/2 | 191 | 409 | 160 |
| DN80 | 3 | 203 | 463 | 220 |
| DN100 | 4 | 229 | 522 | 220 |
| DN125 | 5 | 254 | 715 | 280 |
| DN150 | 6 | 267 | 715 | 280 |
| DN200 | 8 | 292 | 913 | 370 |
| DN250 | 10 | 330 | 1118 | 420 |
| DN300 | 12 | 356 | 1300 | 420 |
Dimension symbols match the connection-specific drawing. These dimensions are not a reference for NRS or mechanical-joint valves. View the source drawing and table.
Supervised isolation, check valves and sprinkler heads. Match the component to the system specification.
Explore application guidanceSpecify the open/closed isolation duty and operating arrangement. Check installation dimensions, stem clearance and access for operation and maintenance.
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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