Help Identifying Possible Pressure Release Valves in Old Heating System?


Postby kevster67 » Tue Aug 02, 2016 10:54 am

This is my first time posting on this forum (although I've found plenty of useful stuff in searches) - so Hi everyone.

My question is - on the central heating pipes running across my loft (a bungalow) there are two parts sticking up from the feed and return pipe that are black and about the size of a RedBull can, with a red button on top that doesn't press in. I am currently replacing the whole crazy heating system (except boiler - a Worcester Greenstar 30 CDi) as it is a bodge of pipes everywhere that has been hacked and changed over the years. I suspect these 'things' are a hang over from the previous coal-fired boiler (possibly pressure release?), as the current combi boiler instructions states that it has an integral over-pressure valve.

Can I dispense with them when I rip the old system out and connect to the new?

Cheers for any advice.
Kev
kevster67
Rank: Labourer
Progress to next rank:
50%
Posts: 3
Joined: Tue Aug 02, 2016 10:35 am

Sponsor

Simply Build It

Postby lets have a look » Tue Aug 02, 2016 5:40 pm

they should be automatic air valves it's common when heating pipes run through the attic, my advice with a combi would be take them out, the red cap should unscrew and shouldn't have been left on as they stop the air from escaping like they are meant to do
lets have a look
Rank: Foreman
Progress to next rank:
4.3%
Posts: 213
Joined: Sun Mar 20, 2016 7:59 am

Postby kevster67 » Wed Aug 03, 2016 9:02 am

lets have a look wrote:they should be automatic air valves it's common when heating pipes run through the attic, my advice with a combi would be take them out, the red cap should unscrew and shouldn't have been left on as they stop the air from escaping like they are meant to do

Many thanks for the advice. The pipes also have a couple of open-ended gate valves with end caps on that look like they are there for manual bleeding. Is it worth adding a couple of these on the new pipework for filling the system and adding inhibitor?
Thanks again
Kev
kevster67
Rank: Labourer
Progress to next rank:
50%
Posts: 3
Joined: Tue Aug 02, 2016 10:35 am

Postby lets have a look » Thu Aug 04, 2016 5:48 am

no don't add anything,with a combi it's pressurised so will push any air out,
lets have a look
Rank: Foreman
Progress to next rank:
4.3%
Posts: 213
Joined: Sun Mar 20, 2016 7:59 am

Postby kevster67 » Thu Aug 04, 2016 9:09 am

lets have a look wrote:no don't add anything,with a combi it's pressurised so will push any air out,

Perfect, thanks again.
Kev
kevster67
Rank: Labourer
Progress to next rank:
50%
Posts: 3
Joined: Tue Aug 02, 2016 10:35 am

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