Do I need a non return valve?


Postby gholland » Sat Apr 04, 2009 6:00 pm

I am about to replace the sink in my bathroom. The new sink has a mixer tap, which is supplied by secondary cold water (from the loft tank), and hot water from out hot water cylinder.
Will either supply pipe require a non-return valve ?
gholland
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Joined: Thu May 31, 2007 8:14 am

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Postby rosebery » Mon Apr 06, 2009 10:08 pm

No because there is no danger of syphonage there being an "air gap" between the tap spout andd any water in the basin.

If it was a BSM and the shower hose could fall into the water that would be a different matter.

Cheers
rosebery
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Joined: Wed Sep 26, 2007 8:55 pm


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