S-220
CLASSIC anti-backflow valve O-ring Ø200
The Backflow Relief Valve is to be installed in the sewage pipes and allows the normal flow of water into the public sewer preventing backflow.
Normal lip seal
Certified at the LGA Institute, according to European standard EN 13564, CE marked according to European standard EN 13564-1.
| Reference | characteristics | Box units | note | Use | Category | DN (mm) | S (mm) | L1 (mm) | L2 (mm) | L3 (mm) | L4 (mm) | RAL | Flaps |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1552091 | - | 1 | 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 | 200 | 4,5 | 100 | 86 | 451 | 300 | RAL 8023 | TYPE 1 |