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PRV Installed on to Cold Pipe not Reducing Pressure

Posted: Tue Jan 31, 2017 10:13 am
by ks9
Hi There,
I have installed a PRV on the cold pipe to reduce the pressure for the shower mixer. But the PRV has not reduced the pressure. This is the second PRV I've tried. I have a high mains pressure over 5bar coming into the house. Any ideas or help please?
Regards
Kj