Mains water pressure boost pump

[Rckape]

Sorry chaps, my bad. Chris is absolutely right.

I'm fortunate enough to live and work in an area where boosters aren't required. I should have looked it up before spouting off.

 

[chris watkins]

but if you don't hold the regs you need consent as you can't self certify?

If you don't hold the Regs you should not be installing anyway, but thats not the point.
Page 5 Notifications see table - 4. (d) "a pump or booster drawing more than 12 litres per minute , connected directly or indirectly to a supply pipe;"

So if not more than 12 there is no requirement to, please trust me on this.

 

[Tjdservices]

If you don't hold the Regs you should not be installing anyway, but thats not the point.
Page 5 Notifications see table - 4. (d) "a pump or booster drawing more than 12 litres per minute , connected directly or indirectly to a supply pipe;"

So if not more than 12 there is no requirement to, please trust me on this.

Not not trusting you Chris just asking.

 

[Rckape]

Now the regs are all cleared up, back to the original question...

Yes it would work as set out in the diagram. I would give consideration to fitting it on the cold main feeding the whole house though.

Some mixer taps and shower valves don't work well with differing pressures between hot and cold. Fitting the pump on the cold main before any tee's will ensure a balanced pressure across the house.

This may be splitting hairs though, without knowing how much of a pressure increase the pump will produce.

 

[clankypipes]

Thanks very much for that - appreciate getting an expert opinion.

I'm about to fit a new kitchen and bathroom, so if I do decide to fit one as per my diagram, then I'll know that oddities with any new mixer shower could be a result of the pump rather than a fault with the shower.