In an earlier contribution to this discussion,
hogie wrote:


thanks roger,

but the radiator that i have has no flat surface on the end of it, the
bleed screw that i damaged is at the back of the radiator, what size
tap do you think would be best? and how far in do i go?


If you use the fitting which I suggested (above) you'll need a 1/8"BSP tap.
A 1/8"BSP thread is 0.383" (9.7mm) in diameter and has 28 threads/inch. The
fitting won't actually look like the generic picture on the Toolstation
website - but will have a shoulder outboard of the thread. You'll need to
drill and tap right through the wall of the radiator, and screw the fitting
in so that the shoulder seals against a fibre washer.

[You'll get a better picture of the little fitting on the BES site. Go to
http://www.bes.ltd.uk/nav_graf/frames_cat.htm and type "Air vent" (without
the quotes) into the product search box. Select the first offering (Diverter
valves and air vents) and scroll down to Air Vents. The small one (6916) is
what yours will look like.]
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!