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.

 

[Spectric]

I realise you mean well, but I've lost count of the number of visits our plumber has made over the years. He's tested everything, found nothing, so concluded it's a leak.

I am glad that he is not a shipright ! If a system is losing pressure then it has a leak, no need to do any testing at this point because it is obvious you have one. A leak needs to be fixed, just topping up to maintain pressure is not the way to go. Say you need to add 250ml every four weeks, by the end of the year you have lost 3.25 litres somewhere and I would be very worried having seen the longer term consequences of such leaks to a property. Also just topping up without adding inhibitor is going to cause further long term issues with corrosion in the system so if your plumber cannot find the leak then get one who can.