The Underground Drainage Backflow Prevention Valve is listed in Hrivika's Piping System catalogue. It is listed in three sizes, from 110 mm to 200 mm. Each carton holds 1 piece.
One-way valve for 110 mm pipe — flap closes automatically if the sewer surcharges, stopping sewage flowing back into the building.
| Size range | 110 mm to 200 mm |
| Sizes listed | 3 |
| End type | RxSpg |
| Pieces per carton | 1 |
| Size (mm) | Pieces per carton |
|---|---|
| 110 | 1 |
| 160 | 1 |
| 200 | 1 |
Carton quantities are indicative and confirmed on the proforma invoice.
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