Mains high pressure

[Clint B]

Has anyone come across extremely mains high pressure in a domestic property ?..? I used 2 gauges one at 6 bar and other at 10 bar both were off scale when static. I was shocked at the readings. Have since fitted PRV. Just seeing if people have experienced the same.

 

[Ben-gee]

Yes. Gauge read 11bar set off the over pressure relief in an electric shower in the middle of the night.
House in bottom of dip in a hilly area and large holiday complex nearby had just closed for season.
Like you I sorted it with a prv.

 

[Last Plumber]

Yes a few times. In valleys or fed by high reservoirs etc.

 

[king of pipes]

Yes locally to me there is a water tower which supplies all the housing and holiday let's in that area 6 bar is quite normal and can creep higher on low demand as above prv set to 3 bar sorted it . Kop

 

[ShaunCorbs]

Yep normally in the sticks where the water board have to up the pressure to get to the end / up hills regular 9-10 bar

 

[Clint B]

Thanks for the replies, I thought my gauge was faulty but not two. It’s normally the other way round with low pressure. It was filling a two gallon bucket in less than 30 seconds !!.

 

[Chuck]

As far as I know there is a minimum supply pressure requirement but no maximum. It's up to the property owner to fit a suitable PRV.

If you notice an increase in supply pressure that is 'abnormal' for the properly it's worth reporting to the water company as it might be due to a fault in their equipment that they need to deal with.