Paul K Posted November 29, 2015 Share Posted November 29, 2015 If the noise only occurs when the heating fires up, I would look towards the pump Quote Link to comment Share on other sites More sharing options...
gsexr Posted November 29, 2015 Share Posted November 29, 2015 (edited) First off identify where the noise is coming from before you get too excited about doing the job. As said above if it happens when the central heating comes on its more likely to be the pump squealing or water velocity noise through a non return valve or heating valve. Sometimes the noise can travel along the pipework making you think its in a different area than it actually is. If its the pump its most likely to be in the boiler or situated near it if its external. Where is the boiler/Pump ? You mentioned doing it after work.... think twice before you start a job and end up in trouble because you need bits and no where is open. Edited November 29, 2015 by gsexr Quote Link to comment Share on other sites More sharing options...
Vlad Posted November 29, 2015 Author Share Posted November 29, 2015 Right...this is kind of embarrassing and annoying There are no tank in the loft or anything else (shows how much landlord knows about her house ). Sorry Dan for wasting your time to type up guide about replacing the valve. Cant hear that noise in the loft either. So that crossed out. Noise only can be heard in the bathroom. Toilet is fine. Taps are ok. So checked radiator and found it... TRV was making that noise...probably a bit faulty? But I turned it a little bit (closer it a bit) - and noise is gone and 1hr later still not re-appeared and radiator still hot... So that will do for now. I guess if it comes back, it will need new TRV? Chapter 2. How hard is it to replace TRV? :lol: Quote Link to comment Share on other sites More sharing options...
Ekona Posted November 29, 2015 Share Posted November 29, 2015 Pop the head off and give the pin a tap with a hammer, usually frees them up. Head will either unscrew from the base by hand, or might have a grub screw holding it if an older one. Note just remove the head, not the whole valve! Quote Link to comment Share on other sites More sharing options...
Vlad Posted November 29, 2015 Author Share Posted November 29, 2015 Yea, it's one of the older ones with screw holding it down...but that screw is rounded off lol so I'm not touching it any more...unless it makes a noise again Quote Link to comment Share on other sites More sharing options...
gsexr Posted November 30, 2015 Share Posted November 30, 2015 that`s just water velocity noise mate that your hearing. As the room warms up and the valve starts to close reducing the diameter that the water is being pumped through. Fixed speed pump and an ever decreasing orifice its inevitable that you will get this noise. Later type energy saving/ variable speed pumps can help. Usually the bathroom radiator does not have a TRV as you need an open loop on the circuit for pump overrun. This is to stop the boiler overheating unless there is an automatic/ manual bypass fitted. Just mentioning this in-case you experience issues after you have turned the valve down a bit. Then again you may have another rad on the system without a TRV. Quote Link to comment Share on other sites More sharing options...
350zedd Posted November 30, 2015 Share Posted November 30, 2015 Looks like Renegade was on the right track back in post no.18 1 Quote Link to comment Share on other sites More sharing options...
Vlad Posted November 30, 2015 Author Share Posted November 30, 2015 that`s just water velocity noise mate that your hearing. As the room warms up and the valve starts to close reducing the diameter that the water is being pumped through. Fixed speed pump and an ever decreasing orifice its inevitable that you will get this noise. Later type energy saving/ variable speed pumps can help. Usually the bathroom radiator does not have a TRV as you need an open loop on the circuit for pump overrun. This is to stop the boiler overheating unless there is an automatic/ manual bypass fitted. Just mentioning this in-case you experience issues after you have turned the valve down a bit. Then again you may have another rad on the system without a TRV. Yea, after I turned it down it started making noise about 2hts later. So I have it a tap, like Dan said, and it's ok so far lol If it happens again, I just get landlord to sort it out Quote Link to comment Share on other sites More sharing options...
ioneabee Posted December 2, 2015 Share Posted December 2, 2015 on a similar vein when I flush a downstairs loo in my place - i get pipe judder (or hammer) - it only happens when this loo is flushed - any suggestions Quote Link to comment Share on other sites More sharing options...
Humpy Posted December 2, 2015 Share Posted December 2, 2015 You are pretty much spot on Andy What you have got is Air hammer / water hammer. A pocket of trapped air probably in a dead end pipe and you get a knocking noise. Quote Link to comment Share on other sites More sharing options...
350zedd Posted December 2, 2015 Share Posted December 2, 2015 on a similar vein when I flush a downstairs loo in my place - i get pipe judder (or hammer) - it only happens when this loo is flushed - any suggestions Fit one of these to sort it http://www.fixthebog.uk/water-hammer-arrester-stop-noisy-pipes-water-shock-preventer-thumping-pipes/ Quote Link to comment Share on other sites More sharing options...
Vlad Posted December 2, 2015 Author Share Posted December 2, 2015 "Fixthebog" :lol: I bet they had a very long and stressful time thinking about the name for the website 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.