What's this leaky thing in my boiler...? - thing.jpg (0/1)

[fred]

In article , Mike Harrison writes

It's an automatic air vent which has a float and valve assembly inside. The valve commonly fails over time making it leak. The cap can be screwed down to remove that risk, but if you get air into your system is may collect in the boiler and risk damage. As a short term measure you can screw down a new cap, but I'd replace it when you get a free moment (before winter). They're under a fiver from a plumbers' merchant.

BTW, I know your pic was small, but this is meant to be a no binaries group, the proper way to show one is to upload it to a free pic site & post a link. Thin end of the wedge, blah, blah, yawn.

HTH

[Mike Harrison]

This thing in my ferroli boiler (see attatched pic) has started leaking from the valve thing at the top.

What is it ? It's only attatched to the water circuit, so I assume it's either a temp or pressure relief valve.

The valve had a plastic cap (like a car tyre cap), and two O rings at the bottom which have gone hard and cracked. The plastic cap doesn't look like it's meant to take any pressure, so I suspect that whatever's inside is leaking and the cap had been holding it until the O rings cracked.

Unfortunately it's buried behind pipes so I've not been able to unscrew the top bit (which I assume does unscrew). Should I investigate further - if something inside has broken/worn will I be able to get a replacement, or shall I just bodge up a proper cap to seal up the top valve....?

[:::Jerry::::]

Another plank who thinks Usenet is either email or a web forum. :~(

[Grunff]

In fact my news server kindly removed it for me, so I didn't get to see it. This will be true for many others.

[Jenny Brooks]

----- Original Message ----- From: "Mike Harrison" Newsgroups: uk.d-i-y Sent: Thursday, August 19, 2004 11:03 AM Subject: What's this leaky thing in my boiler...? - thing.jpg (0/1)

from the valve thing at the

either a temp or pressure

bottom which have gone

suspect that whatever's

the top bit (which I assume

be able to get a

Looks like pressure release valve from top of water pump, try draining some of the water out of your radiator system.

Jen

[Suz]

[:::Jerry::::]

You will when your NNTP server's OS dumps uk.d-i-y because it's is led to think that it has become a binary group due to the ignoranuses of the world...

[raden]

In message , Mike Harrison writes

It's an automatic air vent

BTW, posting photos to this newsgroup is not appreciated, please put it on a website and post the link in future

[Andrew Gabriel]

I'm intreagued because any binary was stripped out before the original article got to my servers (which is naughty as edited articles are not supposed to be propagated).

I wonder where that happened? Path header here reads:

Path: new-usenet.uk.sun.com!carbon.eu.sun.com!news.uni-stuttgart.de! news.belwue.de!feed.news.tiscali.de!newsfeed.freenet.de! fr.ip.ndsoftware.net!proxad.net!proxad.net!62.253.162.219.MISMATCH! news-out.ntli.net!newsrout1.ntli.net!news-in.ntli.net!ntli.net! newspeer1-win.ntli.net!newsfe3-gui.ntli.net.POSTED!53ab2750!not-for-mail

so it must have been one of these (wasn't the first two, as I run both of those).

[Ed Sirett]

valve thing at the

temp or pressure

which have gone

that whatever's

(which I assume

to get a

No picture found (which is not permitted on this NG anyway - post a reference to a web page is the nromal procedure).

From your description I would say you are talking about an automatic air vent. See SealedCH FAQ below.

- - Ed Sirett - Property maintainer and registered gas fitter. The FAQ for uk.diy is at

Gas fitting FAQ CH FAQ