Wonder if this would be helpful, and hopefully searchable! I 'float tested' my connector - and it doesn't!
Tried to buy an OEM replacement but could only get one from the states at £50-odd. I searched up the manufacturer and found that there are alternatives from them, CPC. They're available on Amazon:
https://www.amazon.co.uk/dp/B003LY9X...ing=UTF8&psc=1 there are models with various threads/hose connections available.
Couple of pics:
