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Discuss Advice for low pressure when multiple taps are used? in the Plumbing Forum | Plumbing Advice area at PlumbersForums.net

CowsEatGrass

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Hi guys,
I am looking for options on how to solve the issue of water pressure dropping when more than one tap is open.

Ideally want some sort of buffer so that if the shower is in use it doesn't suddenly slow to a trickle when someone flushes a toilet! Currently just have a combi boiler but open to all options!

Thanks
 

ShaunCorbs

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What’s your incoming flow and water pressure figures?
 
C

CowsEatGrass1

What’s your incoming flow and water pressure figures?

Hi thanks for your reply. It’s take a while to work out.
Severn Trent have said the incoming pressure is 1.9 to 3.8 bar. Avg 2.8 bar.

I’ve done a crude measurement of flow. I’m getting around 10 litres/min in the kitchen.

Would a unvented system be innappropriate?
 

ShaunCorbs

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Is that comparable to what you have at your property?

It’s on the low side for an unvented
 
C

Cowseatgrass2

Is that comparable to what you have at your property?

It’s on the low side for an unvented

I’ve had a plumber out who didn’t specialise in this area and suggested I talk to Severn Trent. They gave the pressure reading but I think they must have just done it remotely.

I’m not quite sure which sort of plumber to call out to get an answer. My usual guy who fitted the boiler and services it doesn’t have a huge amount of advice except for fitting an invented boiler. However, from what I can tell that requires quite a decent incoming flow which I don’t think we have.

I wasn’t sure whether pumps/new pipes/ cleaning out the old pipes are an option. Or if there’s a specific type of plumber who could give me an answer.

Thanks for the advice Shaun.
 

ShaunCorbs

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If you can get him to test the pressure and flow we can go from there

St figures are a guide eg pressure in there pipes

If your pressure is a stable 2.8 bar with a tap running and your only issue is flow an accumulator is perfect for you

But if you only have 1.5 bar it’s not
 
C

Cowseatgrass2

If you can get him to test the pressure and flow we can go from there

St figures are a guide eg pressure in there pipes

If your pressure is a stable 2.8 bar with a tap running and your only issue is flow an accumulator is perfect for you

But if you only have 1.5 bar it’s not

Thank. Will get back to you.
 

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