Low hot water pressure on new tap

plumb1_2

ozskin wrote:

note for plumb 1, which shop am i promoting then?

ozskin wrote:

avavailiable at all good retailers like usailiable at all good retailers like us

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BobProperty

but aren't we getting off topic or at least going OTT. The OP has problems with ONE kitchen tap. I think he should consider swapping it for a different one. Not pumping the hot, or the entire house, or installing a Megaflow or whatever :think:

Canucklehead

I agree with BobProperty.

It's difficult to tell on here just how low the flow is on the tap. It may not bother some people.
A single pump on the hot to the sink will be noisy and may even go to the other extreme and fill the sink in 2 seconds.
If you know someone with a Weir Gauge then you will know exactly how much water is coming out of the tap.

See here.

http://www.northerntools.co.uk/pages/testing/Flowmate.jpg

Corgi Guy.

Moss5

http://www.blanco.co.uk/test/wizard_frames.php?product_type=taps&form_materials=all&form_style=Spray+rinse&x=24&y=11

The sprayrinse version needs a minimum 5m head, preferred range 10 to 15m head.

The_Governor

Thanks for keeping the thread alive guys.

I'd rasther not replace th tap unless I really need to, as we bought it because it's a nice looking tap, although I accept the "good money after bad" argument I guess.

In terms of the head-height required, is this measured in terms of the vertical height or the distance from the tank?

The tanks is probably 3 metres above the tap, but it's actually on the other side of the house so distance-wise the water has to travel about 10 metres I'd say... which to me seems like a fair weight of water?

The reason I talked about adding a pump is that it would have a generally beneficial effect around the whole house, so it isn't a total waste of time just for one tap?

Canucklehead

Hi

If you pump the whole house then that would include the loo I assume? If so when or if it is flushed in the middle of the night then you will need to get used to the noise of the pump. It doesn't matter how quiet a pump is ...at 2am it will be loud!

Given the info from all here it's up to you.!!

Good luck.

Corgi Guy.

The_Governor

I was only thinking of pumping the hot side CG, ythe cold feed is plenty high enough.

Canucklehead

You need to pump both hot and cold if you do the whole house or you will have massive difference in pressure to a bath or shower mixer and it won't work.

Corgi Guy.

The_Governor

Ah I see what you mean, although the difference is fairly huge now in our gravity fed system!

matto

Head is the vertical distance of the top of the water above the fitting.

Bends etc. and lengths of pipe count as a reduction in head.

How much of the pipe run is 22mm? Normally 22mm is used for the bath hot tap and 15 mm for remainder of hot water system. You may be able to reduce the problem by fitting 22mm v. 15mm.