Xantia coolant bleed cap plug thing? - 540402 valve plug

[romie]

Hey, anyone know if the little bleed cap that goes on a Xantia 1.9TD coolant system is only a genuine Citroen part or can I get them nice and cheap (and more conveniently), somewhere else?

Xantia, coolant system, bleed point in engine bay, cap sits on top.

Looks exactly like a schrader valve cap like you have on your car tyre valves. You know the little black plastic caps.

But this one has a rubber bit inside to make a good seal.

Guess what, Citroen said it's not sold separately and it looks like you have to buy a load of pipework to go with it!! B/

Then he mentioned that he thinks he know's what am on about and said he has a bucket of em with part No. 540402 and is described as a valve plug. And would cost me £0.50 each!!

Well they're quite a distance away and would like to source say 10 of em online. . so any ideas where?

Ta

[spider]

It is more or less a valve cap with a rubber seal in it.

You might find the seal is the same (not sure!) as the one in a ZX / 306 / 205 heater hose, the plastic 'screw' type not the valve type, as this has a tiny seal fitted too, it might stay in the pipe but can be pulled out.

Usually with your problem its the complete pipe assembly, I know what you mean its the t-piece section. Normal cause of replacement though is when someone leans on it and it snaps off.

I'd suggest scrapyard to find one if practical.

[addo]

PSA do list exactly the wheel valve cap as also a water circuit screw cap - it's on the turbo models...

[romie]

cheers. . In mean time am going to bung a tyre valve cap on and see what happens :p

hmm?

[Clogzz]

An aircraft engineer told me years ago that a proper tyre valve cap has a rubber seal.
The cap’s purpose is to keep the air in, while the valve’s seal is to allow pumping.

[myglaren]

They are only £1 from the dealer and have been redesigned and come in aluminumin now.

[romie]

hmm, cheers