Are there any plumbers who can advise please

xmaslolly76

Hi everyone

My upstairs toilet appears to have what i believe is an airlock when it is flushed it makes a rumbling sound it is worse when it hasnt been used for a while and dissapears after a couple of flushes. No when not in use i can hear a drip in the cistern. We have had a plumber out to look at something else and mentioned this problem he said that if it is an airlock a new toilet will be required(bearing in mind he never actually went to have a look) is this correct or is he trying to diddle us??

Thank you in advance :-)

Wookey

I really don't think a new toilet will be needed at all, is the toilet fed from the incoiming mains water? if so then what you are hearing is probably water hammer. If it is an airlock then there will be next to no water entering the toilet cistern. If the cistern seems to fill very fast and is noisy then there is probably a low pressure orifice fitted inside the ballcock, this will need changed to a high pressure one if you are on mains feed. If the sewer connection from the toilet goes into the floor what you may be hearing is the sewer pipe moving slightly of the ceiling below when the flush occurs. There are a few other possible causes but without hearing it and seeing the setup its impossible to give a 100% correct diagnosis.

xmaslolly76

Cistern and bowl are both filling correctly i have absolutely no idea how it is connected i would presume from the mains water> the noise is coming directly upon the flush last a few seconds then stops. We thought it was an airlock as it is a simliar noise that we used to get when our old bathroom taps were airlocked and yes that did stop the flow of water abd was fixed with a new washer. The toilet also vibrates when it makes the noise. The toilet has been in since the house was new (about 5yrs old now) and this problem has only been happening for a few weeks hence why i thought something was probably worn and needed replaceing i thought it was very suspect that a new toilet would be required as other than the noise it is working perfectly. I do believe some cowboys see a woman on her own and see pound signs

Anyway thank you , you have armed me with some information at least so i will get another plumber in to have a look and see what they say :-)

1984ReturnsForReal_2

He is trying to con you.

It is more than likely a dodgy fill valve.

Have you got mains pressure to your toilet?

xmaslolly76

Sorry i dont know if it a mains supply i would presume so as there is quite a bit of pressure and all three toilets in the house fill back up really quickly after flushing.

Canucklehead

Hi

I would be stripping down the ballvalve with a view to changing the washer.


GSR

heating-eng

it sounds like water hammer to me .
there could be a number of reasons for this .

pipes not cliped
very high pressure
could be the valve

i would turn the water down at the main stop tap and see if it still does it ?
if it stops you could fit a pressure reducing valve .

hope this helps

mikey72

I did one of these, in the end I changed the valve for a torbeck valve to keep it quiet.

heating-eng

mikey72 wrote: »

I did one of these, in the end I changed the valve for a torbeck valve to keep it quiet.

there a good choice

keystone

If you have a ball valve do as CH suggests and replace the washer. It sounds as though you are on mains pressure. If so and its a ballvalve ensure you have an HP cone fitted and not an LP cone. If LP replace with HP.

If its a modern design valve it could well have air in it. Fluidmaster are much better quality than Torbeck for preference.

You might also like to consider throttling back the isolation valve a bit to reduce the flow rate.

Cheers

Canucklehead

keystone wrote: »

You might also like to consider throttling back the isolation valve a bit to reduce the flow rate.

Cheers

Doesn't that just create more noise.


GSR.