| Reference | Box units | measurement | Nominal diameter | note | Use | Category | Type | DN (mm) | S (mm) | L1 (mm) | L2 (mm) | L3 (mm) | L4 (mm) | RAL | Flaps |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1554091 | 1 | 400 | 400 | Without emergency closure device - Plastic flap | The non return valve can be installed both indoors and out. Installation that allows easy inspection, inside an accessible recess, in an inspection pit, or in sight installation on a pipelin | Non-return valves | without emergency closure device | 400 | 9,8 | 245 | 140 | 800 | 480 | RAL 8023 | TYPE 0 |
