Hot water pressure

davey_browning

I got a new kitchen tap the other day and fitted it but the hot water isn't coming out too fast and I was wondering if I've done something wrong or if I can somehow turn up the pressure.

We have a cold water tank in the loft, a boiler on the ground floor and a hot tank on the first floor. The taps upstairs fire out the hot water and so does the sink in the downstairs bathroom but the kitchen and the utility room seem to have lower pressure.

Any thoughts?

Dave

scrummy_mummy_2

I have exactly the same problems here!....maybe your new tap has a bigger bore on it than your old one (as does mine!) this makes it appear as though the water is coming out slower than it did from your old tap....the volume will be the same, it just comes out of a bigger hole so doesn't fire out and you loose some sort of draw down water pull pressure thingy (physics) because the bore is smaller.
My plumber told me the only way to fix it was to pump the whole hot water system at the cost of about £140 plus labour, or put a smaller bore tap back on.
I chose the be patient, because the taps where the hot water comes out fine would have been affected by pumping the water and I didn't fancy being sprayed with hot water in every other room than the kitchen and didn't fancy replacing all the other taps with large bores!

rich56

Sounds like the jumper ( the bit with the washer on) is sticking, depends what sort of tap it is, but is the most likely cause, turn off water and dismantle the head of the tap, the jumper should be free in its mount.
Flow rate (by volume) from tap is dependent on pressure, is tap down stairs or upstairs (downstairs would normally be at higher pressure than upstairs) though flow rate should be broadly similar.

ceramica_bathrooms

Some kitchen taps and bathroom taps are high pressure, i.e should only be used with a combi boiler or unvented system. These generally work properly at a minimum pressure of 1 bar. To achieve 1 bar in pressure you will need approx 10 metres between the bottom of the headertank and the tap outlet i.e 0.1 bar = 1 metre head. Hope this helps.