Noise After Flushing Toilet

mickger

After the upstairs toilet is flushed there is a loud noise similar to a loud kettle boiling while the toilet is refilling. It can even be heard in the downstairs kitchen area. Its only in the last few weeks the sound has got really loud. Has anyone any idea what the problem might be?

Avns1s

Would be more worried about any noises before the toilet is flushed. :D

Need to look at your ballvalve. Change the rubber diaphragm. Possibly replace with a ballvalve with the little plastic tube that goes down below the water level to reduce noise further.

ttm

If it fills and cuts off OK then try flushing it and then hold the ball valve down untill its full and flush it again try that a few times. If the problem is trapped in the pipe as can happen then allowing the cistern to fill at full flow a couple of times might shift it. We get a problem with our water like that every so often (depends who is looking after the local water supply IMHO) and we get "water hammer" the air comes out of the water as it fills the cistern. Same happens if the water has been off at any time.Once the air is gone it all goes alot quiter.

mickger

ttm wrote: »

If it fills and cuts off OK then try flushing it and then hold the ball valve down untill its full and flush it again try that a few times. If the problem is trapped in the pipe as can happen then allowing the cistern to fill at full flow a couple of times might shift it. We get a problem with our water like that every so often (depends who is looking after the local water supply IMHO) and we get "water hammer" the air comes out of the water as it fills the cistern. Same happens if the water has been off at any time.Once the air is gone it all goes alot quiter.

Will give that a try and see if it helps as it only happens when the cistern is filling up. If the Ballvalve needs to be replaced is that a water turned off job? Is it easy to do it yourself?

ttm

Its a water off job but if you have the skills I always put a small 1/4 turn isolation valve in the supply so if it goes again you don't have to turn the whole house off.

http://www.ultimatehandyman.co.uk/diy_plumbing_isolation_valve_fitting.htm for the sort of isolation valve I'm on about but I wouldn't trust their method without some ptfe tape on the valve side of the olives - no need for ptfe tape on the treads as thats the sign of a total amature......opens can of worms

Edit> http://www.ultimatehandyman.co.uk/ball_valves/washer_replacement.htm gives you an idea of how to tackle the ball valve but you often need to replace both the valve nozzel and the washer - I'll find a picture for you

Edit again> Check the diagrams of the ball valves here http://www.practicaldiy.com/plumbing/ball_valves/ball_valves.php (two different types) on both diagrams its the valve nozzel and the valve washer (valve washer and valve diaphram on the bottom one) that often need replacing. The valve nozzel in some areas never needs changing but where we live you need to do both each time.