Does anyone know what this is please? Part number or name would be great

It’s either this

https://www.classic-vw.co.uk/vacuum-non-return-valve-171611933-mk1--2-golf-jetta-scirocco-caddy-20804-p.asp

Or this, depending which engine you have :-)

https://www.classic-vw.co.uk/vacuum-non-return-valve-k-jet-172611931c-171611931c-mk1--2-golf-jetta-scirocco-caddy-23141-p.asp


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Looks like the 2nd one for gti


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Great many thanks - i clumsily snapped one of the outputs with my arm 

Andy_S said

Great many thanks - i clumsily snapped one of the outputs with my arm 

I've done 2 over the last 20 years….. the spare outlet/inlet with the green cap on it. This time I just taped up the hole.

I have now managed to secure the valve along with the attached pipe.

What is the best way to bend the pipe - its plastic (hard) and is stuck in a U form near the valve.  I was thinking of applying some heat… I have tried hot water but not boiling and its not really worked.  Any tips on getting the tube in the right shape, form?
Thanks!

If you can get a spring in it to retain the inner shape be careful as with out it you could collapse or kink the tubing.  I have seen folks that break that pipe and then remove the check valve and use hose.  So all is not lost if you do kink it.

Briano1234 said

If you can get a spring in it to retain the inner shape be careful as with out it you could collapse or kink the tubing.  I have seen folks that break that pipe and then remove the check valve and use hose.  So all is not lost if you do kink it.

Thanks!! That's a relief!  As they do sell them without the  shrink tube.

new non returns are available through mark carter, hugh coffey and ebay.  if you need another temp fix , try large bore syringe(needle ) stick need into damaged pipe and glue in place ,you then have ready mage push tube point to push vacuum pipe.