Boiler Heating joint leak

[tc5]

Just noticed today a small leak at a valve forming a T joint
exiting the top of my combi boiler hot water to immersion heater pipe, tighten half a notch but still leaks slightly when boiler is off & water cold.

Looking at the soldered straight joint it appears to be a compression valve
screwed into the soldered joint and open at the cap compressing a spring inside. Is this some kind of non return or bleed valve I am struggling to find anything like it on the heating suppliers websites?????????? the system is probally around 15-20 years old!

 

[Agile]

Please look at what you have got and read a book or something so that you can then describe exactly what you have fitted. Perhaps we can then help you.

Tony

 

[MeMyselfAndI]

old type pressure relief valve still available, try plumb center

 

[tc5]

Many Thanks, I suspected it might be that! kind of difficult to describe could have posted a Digital photo if you could upload on this site !

Guess it's drain down the hot water system and replace the valve, if it
defintely just feeds the hot water cylinder I can manage this
myself.

 

[Agile]

If he has a combi boiler one wonders if he really has a hot water cylinder as well?

Tony

 

[Nige F]

If he has a combi boiler one wonders if he really has a hot water cylinder as well?

Tony

but you didn`t guess safety valve I recon we could make a game show of this forum like a question of sport

 

[tc5]

Guess what I also have a back bolier as well !

Rather than question of sport Perhaps the weakest link fits better!

 

[Agile]

It would be a very unusual system which has a combi boiler, a back boiler AND and a hot water cylinder!

I suspect that this may be what is called a "wind up merchant".

Unfortunately I am not accustomed to using impolite language, others can do that!

To us, customers think that they are right! We are polite at all times, even when we are told things that defy the laws of physics!

I will have to leave the rude language to others, I dont know the words!

Tony

 

[Slugbabydotcom]

You need a plumber m8!!! ..... Nothing we can do here to help you unless you at least have a clue of what you are looking at

 

[Paul Barker]

Why not use the dhw cylinder as a thermal store heated by the back boiler. Pass the combi dhw through the secondary coil of the thermal store and you'll have a cheap Worcester Hiflow?