Pressure reducing valve

[morg]

Hi,
Would it be good practice to fit a PRV even if the mains pressure was normal i.e. 2 - 3 bar?

More of a preventive measure, I assume pressure from the kerb mains could potentially spike/raise?

Thanks for any help

 

[Wayners]

If you don't need one why fit one.

I had one for 10 years or so to protect my Mira shower. Removed it as gauge stopped working in 2007 Ish. Haven't missed it and no problems

 

[Johntheo5]

If only 3bar is available and you install a PRV set to 3.0bar then at high flowrates of say 20/25LPM the PRV outlet pressure loss will be ~ 0.25bar/0.4bar meaning a reduced pressure of 2.6/2.75bar available for system use. As above, why bother, any mains pressure up to 6 bar or higher should not present a problem, if worried, just install a pressure gauge.

 

[morg]

Thank you both for the advice and info, that's reassuring and saves time/money not fitting one if not essential

Good idea just fitting a pressure gauge though Maybe on the boiler filling loop? (think I've seen loops with 2 x gauges) As not much room near stopcock / DCV,

Thanks again

 

[oilhead]

What problems do you have? Do you have anything that is pressure sensitive? Some oil combi's were stated to only have 3 bar cold inlet and happily blew seals if overpressured. If you have nothing to protect, then I would not bother.

 

[morg]

Hi, currently no problems as no plumbing exists

I'm still renovating, so basically all plumbing is currently stripped back to internal stopcock, hence the plan of what is best to fit now rather than later,

Not planning on oil boiler, just the basics really 24kw gas boiler, mixer shower, electric shower, can't think of anything that would be pressure sensitive just thought that the PRV could be seen as a protective measure, but I think I'm over thinking things again and it's not worth the bother as you suggest

Cheers