golferjohn;684456 said:The valve on the top of The [words=https://officialhydromaxpump.com/?uid=6&oid=2&affid=98]Goliath[/words] will just pop-off with a little force...once that's removed, you can see where the VacuVin stopper almost fits perfectly. All you need to do is provide an 'O' ring of sorts to hold the stopper more firmly while you're filling the tube with water. Once attached. the stopper is held-tight by the negative pressure you create...ezpz
Ok all done now I have to buy the 'O' ring of sorts.
Can you recommend which material this should be and provide amazon link to something similar ?
Il look for it tommorrow in some shop but have to have an idea what it should be.