capping an end pipe off

[Sump]

I have a pipe with a male thread on the end..

Is is possible to buy some sort of end female threaded bolt type thing that would cap it off to stop anything coming out of it?

I'm not quite sure what these are referred to as.

[motco]

What sort of pipe? Gas, water, something on a car? If water it's a stop-end.

[Sump]

Sorry to be clearer, it's an air con pipe that goes from the front to the back.

Getting rid of the back, so want to cap it off so there is only front AC.

Edited by Sump on Friday 22 March 15:37

[s p a c e m a n]

Silicone and duct tape

[motco]

Wickes, or a builder's merchant will sell you a cap, but there may be a small matter of legality...

I seem to recall a 'competent person' may do his own gas work if not Gas Safe registered (not for anyone else and especially not for money) but your not knowing the name of the part doesn't fill one with confidence as to competence. No offence meant; just an observation.

Edited by motco on Friday 22 March 15:38

[Sump]

updated what i meant.

[s p a c e m a n]

Dont think that the service valve caps will hold pressure on their own.. i dunno, the best bet is to find out the size and google for an end cap.

You could try to glue a service valve cap on, but aircon gas isnt cheap if you keep leaking it.

Edited by s p a c e m a n on Friday 22 March 15:48

[Sump]

A decent end cap should be on on it to be honest, beats replacing the whole rear pipe for now.

[littleredrooster]

Bear in mind that, because a thread is a continuous helix, it is very difficult or impossible to make it seal, especially against high-pressure gas.

Really, the seal should be a joint face compressed by the thread and its fittings; something like a cap with an internal rubber seal (or nitron, or whatever is suitable), so that it seals against the end of the pipe and not the thread.

[Sump]

Sounds like it may be easier to just weld the end of the pipe instead of removing and sealing with a bolt of some sort.

[s p a c e m a n]

Well, going on little redroosters theory above then a service end cap with a rubber washer/bung inside will work. Got to be worth a go for a couple quid.

[Matt UK]

Smash the end of the pipe flat with a hammer and then bend the last few inches back 180 degrees. Should hold.