Low Pressure and flow

[Andy Velcro]

Hello

The water pressure and flow in my area is rubbish. Is there a way of boosting the flow before it gets to my combi so that I can run a mixer shower off it.

Thanks

 

[oilman]

Speak to water supplier OR fit bigger supply pipe, otherwise NO!

Moral: "don't have a combi if the pressure or flow is low".

 

[brumylad]

a solution called 'Coldstream' which transforms the performance of a combination boiler or unvented cylinder when connected to a water source with a poor flow rate.
Coldstream does not use any pumps or electricity but works on an accumulator principle

Suggested in the past by someone who knows more about these than I do. They are expensive though.

 

[oilman]

I agree with brumylad that coldstream unit will help the flow rate, but it can't do anything for the pressure.

 

[oilman]

Groan, the double post gremlin is back.

 

[kevplumb]

yohh

 

[ChrisR]

Kwym oilman but it does increase he pressure at the tap if the losses in the pipe are significant - until the vessel is discharged. So it would behave like the pressure was better.

 

[oilman]

Well, if we use the electric analogy, adding a capacitor across a line won't increase the voltage. Yes you do have charge available, but with water the storage space needed is so large I think you might as well have a vented system and a pump.

 

[kevplumb]

can you pump unvented

 

[oilman]

What burke would want to pump an unvented system then?

 

[kevplumb]

sorry oilman misread the post
(MUST REMEMBER TO STOP AT 12)

 

[oilman]