Together with tee serves as explosive valve
Depending on the boiler power between the cover flanges a membrane is installed (not supplied), which is destroyed under the required pressure performance
| Dv, mm | Dn, mm | Df, mm | Do, mm | Weight, kg |
| 100 | 160 | 202 | 184 | 1,34 |
| 110 | 180 | 222 | 204 | 1,51 |
| 115 | 180 | 222 | 204 | 1,51 |
| 120 | 180 | 222 | 204 | 1,51 |
| 125 | 200 | 242 | 224 | 1,68 |
| 130 | 200 | 242 | 224 | 1,68 |
| 135 | 200 | 242 | 224 | 1,68 |
| 140 | 200 | 242 | 224 | 1,68 |
| 150 | 220 | 262 | 244 | 1,86 |
| 160 | 220 | 262 | 244 | 1,85 |
| 180 | 250 | 292 | 274 | 2,13 |
| 200 | 260 | 302 | 284 | 2,2 |
| 220 | 280 | 322 | 304 | 2,37 |
| 230 | 300 | 342 | 324 | 2,57 |
| 250 | 320 | 362 | 344 | 2,75 |
| 300 | 360 | 402 | 384 | 3,06 |