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Sole UK Agents:- Flood Control Limited Tel: 44 (0)1822-832385 Fax: 44 (0)1822-833401 |
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| The back-flow stop valve
automatically closes when water or sewage flows back through the drain
system during flood conditions. The stop valve allows normal sewage
flow from the inlet to the outlet side of the valve with absolutely
no flow restriction. Integral stop points in the wing area plus built-in
flow channels combine to direct the sewage through the valve protecting
the gate from soil contamination caused by sewage flow beneath the
gate.
In the event of sewage backflow, the back surge is diverted to the 45-degree wings on the gate causing an upward lifting action. Once the lift occurs, the flow of water slams the gate into the closed position, protecting the entire plumbing system from sewage back surge. The gate has polyethylene foam inserts, which will float the gate into the closed position in a slow reversal of sewage back surge. The Mainline Fullport Backwater
valve also has a built-in inspection cover to facilitate rodding
of the main building drain. |
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