ISO 12241 Table A.3
Gate-valve reference areas from DN15 to DN200
The equivalent area includes the valve body, flanges, bolts and stem. No additional bare-area allowance is applied. DN250 remains available for pipe and entered CAD areas, but is not presented as an ISO gate-valve value.
| Size | Pipe OD mm | Equivalent area m² | Face-to-face mm | Flange Ø mm | Bolts / joint | Bare loss at 180 °C |
|---|---|---|---|---|---|---|
| DN15 | 21.3 | 0.1115 | 130 | 95 | 4 × M12 | 319 W |
| DN20 | 26.7 | 0.1249 | 150 | 105 | 4 × M12 | 356 W |
| DN25 | 33.4 | 0.1434 | 160 | 115 | 4 × M12 | 406 W |
| DN32 | 42.2 | 0.1709 | 180 | 140 | 4 × M16 | 480 W |
| DN40 | 48.3 | 0.1921 | 200 | 150 | 4 × M16 | 538 W |
| DN50 | 60.3 | 0.2388 | 230 | 165 | 4 × M16 | 666 W |
| DN65 | 73.0 | 0.2954 | 290 | 185 | 4 × M16 | 821 W |
| DN80 | 88.9 | 0.3769 | 310 | 200 | 8 × M16 | 1.04 kW |
| DN100 | 114.3 | 0.5315 | 350 | 220 | 8 × M16 | 1.47 kW |
| DN125 | 139.7 | 0.7160 | 400 | 250 | 8 × M16 | 1.97 kW |
| DN150 | 168.3 | 0.9595 | 480 | 285 | 8 × M20 | 2.63 kW |
| DN200 | 219.1 | 1.4857 | 600 | 340 | 12 × M20 | 4.05 kW |
| DN250 | 273.0 | Not tabulated | 730 | 405 | 12 × M24 | Enter measured area |
Area source: ISO 12241:2022 Annex A.2.3 Table A.3. Dimensions shown for identification use the current EN 558 and EN 1092-1 PN16 reference table. Manufacturer dimensions take precedence.