Shut-Off Discs with 2 Sealing Rings, Steel, with Central Wingnut DN 40 - 400
Mechanical shut-off disc with 2 sealing rings, with passage (1/2" or 1") for shutting off and testing pipelines, mainly for pressureless closing. Our pipe shut-off disks are suitable for all types of pipes and are resistant to service and waste water. The passage discs have a screwed-on inspection cover with sealing ring.
Materials: Sealing rings made of NR rubber and disc made of steel.
Available nominal sizes: DN 40 – 400.
Maximum permissible back pressure: Depending on the nominal size, the maximum permissible back pressure ranges from 2.0 bar to 0.3 bar.
Typical applications of our shut-off discs:
- Sealing aquariums and ponds (also available in a copper-free version)
- Sealing gas pipelines in industrial applications
- Base plate for pipe construction, e.g. for centring
- Sealing dead-end pipelines
- Plugging heating pipes
- Sealing pipes in power plants and heating systems (silicone version available up to 230 °C)
- Sealing short pipe sections or two pipes placed inside one another
- Leak testing where installation space is limited
| Nominal Size | Size | Application Range | Through Bore | Max. Back Pressure | |
|---|---|---|---|---|---|
| (mm) | (in) | Min. (mm) | Max. (mm) | (in) | (bar) |
| 40 | 1 1/2" | 38 | 50 | 1/2" | 2.0 |
| 50 | 2" | 50 | 63 | 1/2" | 2.0 |
| 65 | 2 1/2" | 62 | 75 | 1/2" | 2.0 |
| 75 | 3" | 73 | 85 | 1/2" | 1.3 |
| 85 | 3 1/2" | 85 | 100 | 1/2" | 1.0 |
| 100 | 4" | 94 | 108 | 1/2" | 0.6 |
| 114 | 4 1/2" | 110 | 125 | 1/2" | 0.6 |
| 125 | 5" | 124 | 139 | 1/2" | 0.6 |
| 140 | 5 1/2" | 138 | 148 | 1/2" | 0.6 |
| 150 | 6" | 145 | 160 | 1/2" | 0.6 |
| 175 | 7" | 175 | 200 | 1" | 0.4 |
| 200 | 8" | 195 | 215 | 1" | 0.4 |
| 225 | 9" | 210 | 230 | 1" | 0.4 |
| 250 | 10" | 245 | 260 | 1" | 0.4 |
| 275 | 11" | 273 | 300 | 1" | 0.4 |
| 300 | 12" | 299 | 320 | 1" | 0.4 |
| 350 | 14" | 348 | 385 | 1" | 0.3 |
| 375 | 15" | 370 | 415 | 1" | 0.3 |
| 400 | 16" | 390 | 430 | 1" | 0.3 |