What is this valve on top of oil boiler?

[garmcqui]

It's leaking, so I'd need to replace it. I've had it off before and cleaned it inside, it has some sort of spring inside.

Any ideas what it is and where I can source a replacement?

Untitled

• garmcqui
• 18 Apr 2015
• 1

Thanks

 

[oilhead]

It is a 1/2" spring loaded safety valve. You can get one from any plumbers merchant.

 

[footprints]

It is an old style safety valve (not doing much by the look of it as it is well screwed down) one here about 3 items down.

http://www.bes.co.uk/products/098.asp

Looks like it might be 1/2" hard to say in a photo, as I recall to set them up you unscrew till it leaks and screw back about 1/4 turn or so to set it, but they all seem to have such heavy springs that it means leaving it hanging on by less than a thread! I fact most are tightened a bit more if truth were told

 

[garmcqui]

Great, thanks