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conor888

Hi

I have a leak at an oil boiler, hoping someone could give me some advice.
I am not a plumber, just a bit of a handyman.

The oil boiler is about 5 years ago (open vented system), it is a warmflow 70/90 standard efficiency oil boiler (NOT condensing). There is a valve at the top side of the boiler casing and it is leaking at least 1 cupful of water every day.
I have attached a picture of the boiler / valve.

My questions are:
1. What type of valve is it? Is it just a Automatic bottle type air valve.
It says at the top of the valve 110 degrees C, 10 Bar
2. I'm a right in thinking that it needs replaced, if its leaking this much water.
Or is there some way of cleaning/fixing it to stop the leak,
Or is there some other reason why this valve is leaking
3. If it needs replacing, is it just the valve that needs removed at the elbow or is the valve permanently attached to the elbow and therefore the
valve and elbow needs completely removed.

I know I would be capable of replacing the valve myself if it needs done.
All I'm looking for is some advice from the experts on here if you would be so kind to help me before I start.

Thanks

Valve.jpg
Oil Boiler.jpg
 
Last edited by a moderator:
That is a bottle vent. Probably best just to replace whole vent. It should just unscrew from the elbow. Wrap ptfe on thread of new vent and screw in (obviously drain system first).
 
cowdrayplumber said:
That is a bottle vent. Probably best just to replace whole vent. It should just unscrew from the elbow. Wrap ptfe on thread of new vent and screw in (obviously drain system first).
Click to expand...
Yes as said needs replacing get a flanco one there far better size is 1/2 inch
As said need to drain or you can be brave and do it very quick live as don't think you would know how to bottle it up (plug vent and feed)
 
Aye, as gray says, Flamco are best and they've a built in spring valve so you can replace the aav in the future without spilling much water.

Have your new one prepared, ready and wrapped with PTFE. unscrew the old one and move like billyo.

Oh, and change it when the system's cold...... Cos that makes you jump too!
 
croppie said:
Aye, as gray says, Flamco are best and they've a built in spring valve so you can replace the aav in the future without spilling much water.

Have your new one prepared, ready and wrapped with PTFE. unscrew the old one and move like billyo.

Oh, and change it when the system's cold...... Cos that makes you jump too!
Click to expand...

Croppie your a man after my own heart keeps the reflexes sharp doing it live lol
 
Change it when the system's cold ...

Great tip!!!

LOL LOL

Hopefully you get the customer to remove all the undergarments from the airing cupboard before you carry out this exercise?

Change it when the system's cold ...

I'm still giggling!!
 
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