radiator leak from valve

Postby trainee » Mon Nov 03, 2008 7:04 am


My mother slipt and fell on the radiator last night and it has been leaking very slowly from the bottom of the valve. does this mean i will have to drain the system and replace the valve. is there a short cut? the rad is downstairs in the hallway and we have a combi boiler which is upstairs in the airing cupboard. The radiator is very old and the pipework is twisted and bent (but it was like this before she fell on it!)

Thanks in advance for your help.
Rank: Labourer
Progress to next rank:
Posts: 3
Joined: Mon Nov 03, 2008 6:59 am


Simply Build It

Postby nitro23456 » Mon Nov 03, 2008 7:46 pm

try tigthening the nut
Rank: Foreman
Progress to next rank:
Posts: 346
Joined: Sun Aug 12, 2007 6:19 pm

Postby chris_on_tour2002 » Mon Nov 03, 2008 10:41 pm

it might just be a case of nipping up the compression nut a little tighter with a spanner.

if this does not work then it will mean a drain down and ptfe the thread (at the very least) or better still replace the valve (which you may as well do as you are draining down anyway). and if it's an old system it's a good opportunity to flush the system and add cleaner/inhibitor.
Rank: Project Manager
Posts: 1023
Joined: Thu Aug 30, 2007 9:14 pm

Postby trainee » Tue Nov 04, 2008 5:10 pm

Thanks for your replies. Much appreciated. I'll try tightening the nut first and go from there...

Rank: Labourer
Progress to next rank:
Posts: 3
Joined: Mon Nov 03, 2008 6:59 am

Postby htg engineer » Fri Nov 07, 2008 6:46 am

"ptfe the thread" why ? pointless exercise.

You need to apply the PTFE tape to the olive - this makes the watertight seal not the threads of the fitting.

Many plumbers put PTFE tape on the threads of compression fittings, haven't a clue why, waste of time and PTFE !!!

htg engineer
Rank: Project Manager
Posts: 3219
Joined: Tue May 22, 2007 5:22 pm

Postby C23kW » Sat Dec 13, 2008 1:54 pm

it's simple.....kill the batman! lmao
nar try tightening nut and if it makes it worse, turn lecky off, drain system, and replace valve.
remember to PTFE is atleast 15-20 times lol

Rank: Apprentice
Progress to next rank:
Posts: 20
Joined: Sat Dec 13, 2008 1:14 pm

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides

  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!


  • Related Topics