Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I over-tightened the bleed valve on the radiator and it fell out! It seems to look like a screw but I can't seem to get it re-attached, luckily it's locked so not leaking.

I can't see well enough to try and get it back on as a big cabinet is in the way. But I was wondering if it does actually screw back on or if I've snapped it off and it's permanently broken?

Hole where the radiator bleed valve should be

share|improve this question
Any chance you can post a few pics of the broken(?) valve and the radiator? – The Evil Greebo Nov 16 '12 at 13:31
Twisted off the stem. – Fiasco Labs Dec 7 '13 at 19:41
up vote 1 down vote accepted

Yes, that is snapped off. You're OK until you need to bleed again. Then you will need to gain enough access to drill a small hole into the broken screw. Once a screw extractor is inserted into the hole, the rest of the screw should come out and you can place a new vent screw in it's place. These screws do not need to be super tight, firmly snugged should do it. At least now you know how much is too much.

share|improve this answer
Cheers, I'll be sure to do that when i have the time. Any ideas on where i can get a new screw? – CurtisJC Nov 21 '12 at 12:15
Ah, there's the rub. It may have a particular shape on the end, and you'd have to remove it to see what it is. Not to mention compatible threads, though the broken off piece may have enough thread for an ID. I've no idea how 'standard' these things are. You may be able to go to a good plumbing shop and ask for a radiator bleed screw and get the right one. Or not, I've no idea, sorry. – bcworkz Nov 21 '12 at 18:59

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.