Cast iron auto air vents

[JCplumb]

Hello gents,
Went to a job to replace a snapped off bleed fitting on a rad today expecting it to be a straight swap for a 1/2 inch one out of the toolbox and found this snapped off the 1 3/4" reverse thread bush from an old looking cast radiator.

I phoned every merchant in Bolton and got no joy and was looking at having to order one which would have taken a few days at least.
If you guys ever use these, where do you get them from?

Also why are they called 1/8" when the threaded diameter is about 10mm?

Incidentally after phoning Kev he came to my rescue with a similar item that had been rolling round the back of his van for a few weeks, that must be 2 pints I owe him now and a Biryani

 

[Ermintrude]

Graham's and crosslings keep them instock up here.

 

[Chalked]

Could you just replace it with a manual 1/8th air tap?

 

[JCplumb]

Graham's and crosslings keep them instock up here.

Grahams here didn't have them, they could order them in though.

Could you just replace it with a manual 1/8th air tap?

That's pretty much what I did (thanks again Kev), but not usually something I'd keep in stock.

 

[Chalked]

Most merchants keep the manual type.

 

[JCplumb]

Most merchants keep the manual type.

Not round here they don't.
PTS were funny, when I phoned them it was like I was asking them how to do brain surgery

 

[kris]

You can always use a standard 3/8 airvent and then use bushes as neccassary
Ex
3/8" -15mm then 15-22 brass bush or 1/8"-1/2" bush then 1/2" - 3/4" bush hay presto- Load o brass

 

[Chalked]

Even b&q keep them!
B&Q - Search
Shame they can't fit the bush the right way round!

 

[JCplumb]

Ermahgerd!
B and Poo do them? I drove past there twice on my way to poofix!

Well I must admit, I feel a little silly now...

 

[kris]

Soz JC ignore last part , just re read your thread,,,,- did any threads damage on the bushes in the rad as probably aswell taking bush out renewing bush aswell if damaged but im sure you can get a standard 3/8" vent then bush it up