Strange plumbing issue

[MorrisWoodman12]

Oh BU@@ER, After all the work yesterday another discharge overnight. Looks like a pressure regulator will have to be fitted on the incoming mains. I don't know if there is a regulation specifying a maximum supply pressure to which the water supply company should adhere. I also don't know what the maximum inlet pressure the incoming water regulator will cope with.

 

[Stevekane]

Oh BU@@ER, After all the work yesterday another discharge overnight. Looks like a pressure regulator will have to be fitted on the incoming mains. I don't know if there is a regulation specifying a maximum supply pressure to which the water supply company should adhere. I also don't know what the maximum inlet pressure the incoming water regulator will cope with.

Close the stopcock before going to bed and see what happens, that way your narrowing the issue down to high overnight inlet presure or a fault with your system.

 

[MorrisWoodman12]

Close the stopcock before going to bed and see what happens, that way your narrowing the issue down to high overnight inlet presure or a fault with your system.

Already done so. Problem doesn't occur.

 

[MikeJhn]

Pressure regulator on incoming main set to three bar, pressure regulator on HW tank outlet to tundish set to seven bar, always worked for me with mains pressure systems in France.

 

[Stevekane]

A long while since I looked but the regulators screwix sell come with a built in gauge, you adjust it in situ to whatever max presure you require, I dont recall them being expensive and hopefully be an easy diy fit.
Good luck,
Steve.