I hindsight, I should have fitted the PRV just to the cold feed to the shower. I'll check this out first anyway and try and drop the pressure down to see if this resolves the problem. If not, then I'll move on to isolate the shower mixer itself and then each of the tap mixers to see if this works.
Appreciate the advice. I'll check this all out tonight and post back what I find out...
Quote:
Originally Posted by ajs heating
if you have fitted a prv on the cold mains i would say its set abit high still as it is over powering the hot.
you could have fitted it to just the shower supply as fitting it to the mains inlet to the whole house can drop the pressure on certain things that you don't want dropped like your tank ball valves, garden tap, etc.
|
I think you were right, AJS Heating. I tried kind of what you said, but a little different... In addition to the isolators on the mixer tap in the bathroom and the isolators on the mixer on the shower I also have isolators for the whole of the bathroom. I switched both the bathroom isolators off and the CWS tank ceased to fill up...
Then I just switched the cold isolator on so that I should only get cold water out of the sink mixer tap in the cold position and nothing when I move the tap round to the hot position, but I get cold feed water coming out when the sink mixer tap is in the hot position, so the cold feed water must be going into the shower mixer and coming back round through the supposedly non-return hot valve and out of the tap when it's in the hot position...
Looks like it's going to be a difficult job to get the hot non-return valve out to have a look at it and even then I'm not sure what I'll be able to do with it if I do get it out... Any ideas?
Cheers,
Stew