DIY Doctor

Main navigation

Leaking End Cap Bleed valve

Postby mcaddy » Mon Mar 23, 2020 10:04 am

I think I've tracked a leaking heating system down to an end cap air vent. It's not been coming out at a fast rate so mostly evaporating as it runs down the hot pipes. I've tightened but this doesn't seemed to have halted the continued loss of pressure. I caught it the other day with a bead of water around the screw thread. So suspect keen to get it sorted before all the shops are shut and I'm paying over the odds for parts.

2020-03-23 07.38.41.jpg

I've found what I believe to be a direct replacement ... nMQAvD_BwE

would it be possible to replace just the screw cap and leave the fitting in place or will I have to replace the whole component.

If replacement is the answer is there a compression fitting option as I've limited experience of soldering and although I understand the theory and have most of the tools, I'm probably best not to start with a vertical fitting.

If I am replacing is there a better / upgraded solution I ought to be considering.

Rank: Apprentice
Progress to next rank:
Posts: 7
Joined: Tue Aug 22, 2017 9:07 pm


Simply Build It

Postby stoneyboy » Tue Mar 24, 2020 12:02 am

Hi mcaddy,
These bleed valves have a rubber washer in them that over time perishes.
Buy a new one, depressurise your system, then either replace the cap (if it has the same thread) or fit the washer from the new cap into the old one.
Regards S
Rank: Project Manager
Posts: 4530
Joined: Wed Dec 10, 2008 6:44 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