PRV location

[crazylarry]

I have a mixer shower connected up to a combi boiler and the mains cold. It's vibrating and making a humming noise when it warms up. Turning the cold water on the basin or bath reduces the problem. So I've got a pressure reducing valve. But where do I fix it? On the mains feed going into the boiler or between the mains feed and the shower?

Cheers.

 

[crazylarry]

Nobody loves me

 

[Matt 87]

Is the shower suitable for mains pressure? Could be meant for balanced supplies only.

If you put it before the mains going into the boiler then it will affect your DHW and not the cold on the shower, if between the mains and shower then it will just affect the cold on the shower and any other cold water points that are tee'd off, e.g. your basin.

 

[Happyplumber]

If you are installing a pressure reducing valve it needs to be fitted just after the stop cock so it affects the whole supply to your home