Re: water presure
Posted by Tim on February 25, 19100 at 10:26:03:
In response to Re: water presure
Sounds like the main water supply lines (does this happen with both hot and cold?) aren't big enough. If it is just 1/2" copper feeding multiple fixtures (ie shower, washer, sinks), one open faucet will utilize all the available supply.

Normally I think 3/4" main lines are used to supply multiple fixtures (which are likely to be used simultaneously). I'm no plumber, but that's what I've seen.

If you're in a bungalow with an unfinished basement, you should be able to determine if this is the problem and simply replace the main feeds back to the cold water supply.

: Have you checked the pressure when the faucets are opened? The pressure could be 70# when everything is shut off, but not deliver any volume when water is being used.

: : I have very low water pressure in house. when washer is filling there is hardly any water coming through faucets the same when toilet is filling etc.have checked on line coming in ,it reads 70lbs.I am not sure if there is a reducer valve or if so where it is.any ideas?

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