JoelP
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| posted on 25/4/10 at 06:42 PM |
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One for the gas engineers
Ok, im hearing different things from different people, even transco disagreeing with gas safe. So i thought id ask here for a definative answer!
Is it allowable within the regs to have a backplate elbow with a parallel thread, and a gas bayonet with a parallel thread, sealed together with gas
PTFE? If this isnt the norm, would you expect the bayonet to be a tapered thread?
Cheers!
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adam1985
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| posted on 25/4/10 at 07:21 PM |
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i would expect them to be tapered if they were parrllel then it would just keep screwing in untill it bottomed out on the fitting wouldnt it? ive
never come across a parrallel cooker baynet i would go with what gas safe say rather than transco
eta
on bes website the cooker bayonet is described as 1/2 bsp t m (british standard pipe tappered male) Hope this helps
[Edited on 25/4/10 by adam1985]
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JoelP
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| posted on 25/4/10 at 08:03 PM |
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quote:
Originally posted by adam1985
eta
on bes website the cooker bayonet is described as 1/2 bsp t m (british standard pipe tappered male) Hope this helps
i found that. So i assume all bayonets must be tapered. Would that seal into a parallel threaded elbow?
cheers!
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adam1985
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| posted on 25/4/10 at 08:16 PM |
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yeah im pretty sure all the backplate elbows are parellel
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Marcus
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| posted on 26/4/10 at 11:46 AM |
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Parallel female to taper male is a recognised sealing combination. Parallel male an parallel female is not (unless ur in Italy......don't
ask....).
Italians call parallel threads gas threads for some weird reason, confuses the hell out of us who have to deal with both!!
Marcus
Because kits are for girls!!
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JoelP
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| posted on 26/4/10 at 06:49 PM |
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whats happened is our gas man had a leak and the chap from transco said he'd used a water fitting. Gassafe say this is nonsense. It was a
backplate elbow and a gas bayonet. As far as i can see you get no choice in the matter, all back plates elbows are parallel and all gas fittings are
tapered?
Nice for transco to be alarming customers like that!
Cheers for the input lads.
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