In need of some help any would be much appreciated

[plumberbrian]

hello ther forum users

i was wondering if any of the users on here could possibly

help me iam writitng a essay on how to change a TRV on a radiator

and jus need sum help on a few points to make sure when i submit it i get it right i have done this countless times at work but u no how it is thers a way college want u to write things an thers the way u do it in the real world thanks alot guys

 

[pnhsolutions]

write it up on here and we can advise

 

[dontknowitall]

You never know, we might even help with the spelling .... teehee!!

 

[leakylea]

is it possible to write an essay on changing a rad valve?, you would need to add in a detailed account of the brew you had whilst watching jeremy kyle on the plasma and attempting to chat up the home owner. This might stop the lecturer from slitting his wrists through boredom!!

 

[plumberbrian]

There could be some mistakes as iam not the best speller in the world and writing things like this down isint my thing thanks guys

Changing a thermostatic radiator valve​

​

• Turn off boiler and disconnect power supply from the mains and turn the cold water supply off
• Connect a hose to a available drain cock put a dry a rag underneath the drain valve to catch any lose water and put the other end of the hose outside near to a drain
• open up the drain cock and allow the system to drain out
• when water has been fully drained out tighten up drain cock but leave the hose connected
• with the new Thermostatic radiator valve ready undo the TRV valve nut making sure that u have a dry rag underneath as well as sum sort of container like an ice cream tub to catch any excess water.
• when the nut is undone u should then proceed to undo the other nut which is on bottom of the valve joining it to the copper pipe
• then unwind the long body nut from the radiator again being ready with the container to catch any excess water
• with the new long body nut from the TRV in hand put approx 12 rolls of PTFE tape around the threaded side of the fitting
• With step 8 done u should then proceed to wind the Valve fitting into the radiator getting it as tight as possible
• on the copper pipe u should then take off the old olive and nut it may be necessary to cut the olive off with a junior hacksaw.
• then place the new TRV nut onto the copper an then after that put a olive on just as it was before
• You should now be able to fit the new TRV tightening both nuts up to the TRV to as tight as they will go without over tightening both the nuts.
• Then slowly turn the water supply back on and turn the boiler back on and allow the water to flow through as normal
• While this is going on use a Radiator valve key to bleed the radiator out of any air keep doing this regularly until all the air is out
• As well as checking all joints and nuts for any leaks if there any leaks from the nuts simply tighten the nut up with a spanner
• After all these process and with no leaks u may then disconnect the hose and tidy up everything you have used and clean the radiator down
• Then liaise with the customer show them what you have done and explain what you have done and make sure that they are happy with the job.

 

[leakylea]

you seem to have it covered ther pal, but depending on the system, it is possible to put tempory caps on the feed and expansion pipes that acts like putting your finger over a straw and keeps the water in the system,
it is then possible to crack the nut on the old trv ro remove it without having a a drain down, allways a source of airlocks,especially on a friday afternoon, when you have just told the missus you will be home in 15 mins and get home on sunday!.
but i suppose that will not be enough for an essay,i take of alot of rads and would recommend that where possible you should add pulling back the carpet AND using a heavy weight dust sheet that is waterproof to your list of procedures, Good luck with it.

 

[Deleted member 2053]

One small point - in a lot of cases the TRVs will have been fitted by someone who doesn't know their own strength and the nuts will be done up to just below the point at which the threads strip. Hence you want to slightly slacken both nuts on the old TRV before you completely remove either of them. Jus makes life a bit easier! And it makes it look as if you have thought about potential problems for your essay.