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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| Model Reference | 3665 |
|---|---|
| Available Sizes | DN50-300 |
| Requested Size | DN50 · DN65 · DN80 · DN100 · DN125 · DN150 · DN200 · DN250 · DN300 |
| Pressure Rating | PN16 · PN25 |
| Body Material | Stainless Steel CF8 |
| Connection Type | Flanged (BS EN 1092) |
| Working Temperature | -20°C to 120°C |
| Suitable Medium | Water; ethylene glycol solution up to 50% concentration |
| Selection Basis | Catalogue range; exact size, pressure, materials and coolant compatibility confirmed for the project |
Catalogue options. Operating limits depend on the selected size, materials and configuration.
Full-open or full-closed isolation for stainless cooling-water pipework. Allow space for the stem and confirm the face-to-face requirement.
Applications: Data Centers & AI Cooling
For technical documentation or assistance with your selection, contact Nordic Valves.
Full-open or full-closed isolation for stainless cooling-water pipework. Allow space for the stem and confirm the face-to-face requirement.
| DN | Inch | L / mm | D / mm / PN16 | D / mm / PN25 | D1 / mm / PN16 | D1 / mm / PN25 | D2 / mm / PN16 | D2 / mm / PN25 | b / mm / PN16 | b / mm / PN25 | n–φd / PN16 | n–φd / PN25 | t / mm / PN16 | t / mm / PN25 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 2" | 250 | 156 | 160 | 125 | 125 | 100 | 100 | 16 | 20 | 4-φ18 | 4-φ14 | 3.9 | 3.9 |
| 65 | 2½" | 265 | 175 | 180 | 145 | 145 | 120 | 120 | 18 | 22 | 4-φ18 | 4-φ14 | 3.9 | 3.9 |
| 80 | 3" | 280 | 193 | 195 | 160 | 160 | 135 | 135 | 19 | 22 | 8-φ18 | — | 3.8 | 3.8 |
| 100 | 4" | 300 | 210 | 230 | 180 | 190 | 155 | 160 | 20 | 24 | 8-φ18 | 8-φ23 | 3.9 | 3.9 |
| 125 | 5" | 325 | 241 | 270 | 210 | 220 | 185 | 188 | 21 | 28 | 8-φ18 | 8-φ25 | 5.8 | 5.8 |
| 150 | 6" | 350 | 276 | 300 | 240 | 250 | 210 | 218 | 23 | 30 | 8-φ23 | 8-φ25 | 7.0 | 7.0 |
| 200 | 8" | 400 | 333 | 350 | 295 | 310 | 265 | 278 | 26 | 34 | 12-φ23 | 12-φ25 | 6.0 | 6.0 |
| 250 | 10" | 450 | 405 | 425 | 355 | 370 | 320 | 332 | 30 | 36 | 12-φ25 | 12-φ30 | 6.2 | 6.2 |
| 300 | 12" | 500 | 460 | 485 | 410 | 430 | 375 | 390 | 30 | 40 | 12-φ25 | 13-φ30 | 7.0 | 7.0 |
Dimensions use the letter references in the datasheet drawing. Pressure-class columns refer to the specified flange drilling.
| Drawing no. | Part | Material | Specification |
|---|---|---|---|
| 1 | Body | Stainless Steel | CF8 |
| 2 | Sealing Surface | Stainless Steel | SS304 |
| 3 | Gate Plate | Stainless Steel | CF8 |
| 4 | Shaft | Stainless Steel | SS304 |
| 5 | Medium flange gasket | PTFE | -- |
| 6 | Valve Cover | Stainless Steel | CF8 |
| 7 | Double Headed Bolt | Stainless Steel | SS304 |
| 8 | Hexagon Nut | Stainless Steel | SS304 |
| 9 | Filler | PTFE | -- |
| 10 | Packing Gland | Stainless Steel | CF8 |
| 11 | Bracket | Stainless Steel | CF8 |
| 12 | Valve Stem Nut | Bronze | ZCuAL10Fe3 |
| 13 | Handwheel | Cast Iron | KTH330-08 |
Material options are shown where listed. Confirm the complete wetted construction for the selected coolant and configuration.

Isolation, balancing, control valves, strainers and flexible connections for facility-water and CDU cooling circuits.
Explore application guidanceSpecify the open/closed isolation duty and operating arrangement. Check installation dimensions, stem clearance and access for operation and maintenance.
State facility-water or CDU / technology-cooling duty, coolant formulation, flow, temperature and pressure. Confirm wetted materials and the exact valve configuration for 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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