|Posted by hj on September 24, 1998 at 10:34:02:|
|In response to Re: Back Flow|
Instead of cursing the darkness, light a candle. Rather than put up with occasional disruptions, correcting the symptoms is the best you can do.
A check valve, or backwater valve, only works as long as it can seal. If a stick, paper, or any other object lodges in the opening, the backflow will still occur, although at a slower rate. The best solution is a combination check valve/ pump pit. In this system the check valve closes, but if any water infiltrates back, (or if you use water in the house), it rises into a pump chamber and the pump discharges it out into the flooded sewer system. This allow you to use water in the house, and also gives a positive backup to the check valve, as long as the power does not fail. If the power fails, then you would still have time to get a gasoline pump and suck the water from the pump chamber.
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