Why the hell did this happen ?

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rubber_jonnie
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Re: Why the hell did this happen ?

Post by rubber_jonnie » Fri Nov 20, 2020 3:18 pm

PaulJ wrote:
Fri Nov 20, 2020 1:35 pm
@rubber_jonnie , your lucky you were home and not sleeping. I worry about that here since water pressure is a lot higher. From the street water pressure is 120 PSI and there’s a regulator which has it turned down to 60 PSI. I do have a value on the washer so when not in use the water is off so if a hose does burst it has no water supply. One question though Jon.... What is GB doing using PSI? It’s hard to believe your not using something like KSML. (Kilograms per Square Milliliter) That hose must really have been bad to break at that low pressure. Matter of fact I can’t imagine using water at 15 PSI.
It was actually a hose belonging to @exxos , I was just theorising :)

GB has long used PSI, we like our imperial measurements here :) I do mix my imperial and metric measurements up all the time, but you'd have to head over the English channel to start getting metric pressure measurements.

The govt standard for the mains water inlet to the house is .7 bar, 10.5 PSI and various sources state it's more like 1 bar, 15 PSI. The standard is filling a 4.5l, 1 gallon, container in 30 seconds.

Doing some digging, it's expected that the fittings in a UK home will allow up to a maximum of 5.5 bar, 82.5 PSI. The actual suggested domestic pressure is 3-4 bar, 45-60 PSI. So our internal pressures are about the same, but your 120 PSI mains inlet seems really high, it must leak incredibly if a pipe breaks!
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Re: Why the hell did this happen ?

Post by exxos » Fri Nov 20, 2020 5:47 pm

I think the mains water pressure has increased.. probably down to all the new houses they keep building I guess :roll: Even upstairs the cold tap which isn't limited you cant really turn it on more than half way, the pressure is bonkers. Considering aswell 2 blow outs in as many weeks...

I've turned down the master tap anyway. Pressure upstairs is better now (lower) . Though it dropped a fair bit when flushing the loo, so turned it up a bit again. So now its at a point where its really at a "minimum" to what is needed to keep a reasonable pressure throughout the house.
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Re: Why the hell did this happen ?

Post by PhilC » Fri Nov 20, 2020 5:50 pm

Best advice so far is to fit a pressure reducing valve after the main stop cock.

I suspect looking at the photo that the hose was twisted excessively when originally fitted and unravelled some of the braid slightly.
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Re: Why the hell did this happen ?

Post by exxos » Fri Nov 20, 2020 6:03 pm

PhilC wrote:
Fri Nov 20, 2020 5:50 pm
I suspect looking at the photo that the hose was twisted excessively when originally fitted and unravelled some of the braid slightly.
It got twisted when it was removed, but none of the similar pipes are under any sort of strain or anything.
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Re: Why the hell did this happen ?

Post by atari030 » Sat Nov 21, 2020 6:41 am

arkadiusz.makarenko wrote:
Thu Nov 19, 2020 11:08 pm
Happened to me 8 years ago.
Finest chineese steel. :D
Same here, six months ago. It looked like the stainless had rusted...... finest Chinese stainless. I was watching the box and bang. Walked into half an inch of water. I was quite surprised how loud it was.

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Re: Why the hell did this happen ?

Post by mfro » Sat Nov 21, 2020 8:42 am

exxos wrote:
Fri Nov 20, 2020 5:47 pm
I've turned down the master tap anyway.
That won't help much as it just reduces flow, not pressure (reducing flow might be a good idea anyway if you fear further accidents...)

If you indeed experience high water pressure, you'll need a pressure reduction valve.
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