Help with toilet cistern

[Salar]

It sounds like you have a modern type (vertical) Syphon where repair is normally by replacement so there won't be a Ball Cock that you can adjust.

Closing the Appliance Valve will NOT lower the pressure but it will lower the flow rate which will certainly address your concerns about the water inlet Flow overcoming the overflow pipe.

That's what I reckon it is. You can't adjust them, they are known to have this problem and sometimes the thin plastic straw which presses down comes loose too which doesn't help.

I once cured one by putting fairy liquid in the cistern and syphon. I didn't think it would fix the problem but it freed up something which was sticking.

 

[pclay]

First thing to check is the diaphragm washer

 

[johnnyb47]

Hmmm what does that thin tube thats connects from the inlet valve assembly and drops off into the overflow pipe do. It kind of looks like aquarium air line tubing (just curious)

 

[gbb]

If it's the same as we have at work, they're Torbeck type valves and we do occasionally have problems with them. See this video...

View: https://youtu.be/gzV98xoyWEQ

Pretty much as pclays suggestion above methinks...

 

[Milkfloat]

I'll take a photo as suggested later on. I've got a 60 mile trip to do shortly A work mate needs picking up from hospital after undergoing surgery. Certainly no cycling for me tonight

Can you not give him a backie?