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Posted by toller on February 12, 2005, 11:52 pm
>
>>About a year ago a friend asked me about installing a water powered sump
>>pump for him. I checked with the town and they require an expensive valve
>>to insure there is no backflow between the pump and the water supply; if I
>>remember correctly, there are two kinds that could be used, and they
>>require
>>the expensive one. Ultimately the friend decided not to do it, so I
>>forgot
>>about it.
>>
>>Today he called wanting it to go in before he goes on vacation Monday! It
>>is a simple enough job, but I can't remember what the valve the town
>>required was. An ideas?
>>
>
> They probably require a reduced-pressure principle backflow preventer-
> The cheaper one is probably a double check valve with an atmospheric
> break-
>
That sounds right, thanks.
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