Plumbing question

jennifernil

Background....

Top (7th I think) floor flat, electric heating, cold storage tank inside flat supplies hot water storage tank, poor mains pressure, mains cold water to kitchen.

Electric shower over bath is good, has own integrated pump.

Pressure of both hot and cold water in kitchen is very poor, as a result the washing machine stops as it gets insufficient water. Takes ages to get a sink of HW to wash dishes.

Question......

Can a pump be fitted to the H&C to the kitchen to increase the pressure?

If so, can anyone recommend a suitable model?

ormus

my brother lives on the ninth floor. and he has two stopcocks. one for kitchen sink mains riser.
and one for the bathroom, all fed from tanks above.

gas4you

Pressure drops 0.3 Bar every 10ft (one storey approx), so that will give a pressure drop of about 2.1 Bar to your flat.

If you haven't got at least 3 Bar from the cold main out side your block of flats, you won't really stand a chance of a good cold mains supply.

jennifernil

ormus wrote: »

my brother lives on the ninth floor. and he has two stopcocks. one for kitchen sink mains riser.
and one for the bathroom, all fed from tanks above.

The problem is that there is no tank on the roof to give any pressure to the flats, the tank in the flat above the HW tank is fed direct from the mains, and so is the kitchen tap and WM.

jennifernil

andrew-b wrote: »

To the hot yes...not mains cold though. I think your best bet is to pump cold from the tank to the washing machine only....but the tank needs to be big enough not to be completely emptied by the pump before it's had a chance to refill..at least a 50 gallon tank.
I was under the impression though that there is a minimum water pressure to be supplied by the water company...athough i'm not too sure whose reponsibility the rising main in a block of flats would be - presumably the height is the issue here.

Can you explain why a pump cannot be put on the mains cold to the kitchen? The mains pressure is dire!

Cold tank is big enough, but access to add pipework looks very difficult.

This is an ex council flat (not ours BTW), so no idea whether council have any responsibility here. The WM is virtually unuseable, the poor lad has to take his washing home to Mum.