Toilets continuously refilling after boiler install

[dan_the_plumber]

Hang on a second, we’re your toilets actually fed from a cold water storage cistern?
Or was the cistern just feeding the hot water storage tank?
Have you got a pressure reducing valve on the incoming main? Has it been adjusted recently?

 

[Harvest Fields]

If they turned your cold mains off. They may have opened it back up too far. Try reducing it back slightly.

 

[Stigster]

If they turned your cold mains off. They may have opened it back up too far. Try reducing it back slightly.

That'll only change how fast the valves are passing water, not actually stop it from happening, if high pressure is causing the valves to pass water. Adjusting the stopcock will only affect flow rate.

 

[Harvest Fields]

That'll only change how fast the valves are passing water, not actually stop it from happening, if high pressure is causing the valves to pass water. Adjusting the stopcock will only affect flow rate.

Only said it because I have had old style pro45b’s pass like this before

 

[cadmunkey]

Sorry, thought I would come back and update this thread. I bought the new fill valves that Best recommended and when fit it completely solved the problem with all 4 toilets so I'm happy. Cheers and thanks for the advice.

 

[Harvest Fields]

No problem mate. Glad the forum could help.

 

[Best]

Glad they did your job. Thanks for coming back and letting us know how it all went.