I use the standard euro fitting bleeder cap made by Alba that is supplied as standard fitting with Sealey and Alba pressure bleeders. Works fine on my V40 and Ducato.
https://www.ebay.co.uk/itm/223210566283
although mine has the 90 degree valve connector.
I had to buy a different cap to fit my wife's Hyundai and also had to buy pressure couplings to make up an adapter hose to connect the Hyundai cap to the bleeder, as the cap coupling was a different type. If you have an incompatible bleeder you could do similar to allow the Alba/Sealey cap to connect to it.
Edit: This may not apply - I missed that the post was in the 96-04 forum when I replied. I accessed the post via the new posts feature initially.