dont know about you tam but i cant see how this could work in real life gadget IMHO
I've got the 15, 22 and 28mm.
I think the video shows a tricky situation but demonstrates an advantage it clearly has over any other type of plug on the market, no question there. Have I used mine for that type of situation, not at all.
I do quite a bit of power flushing (don't hate me for it) and it saves me quite a bit of time on setting up an open vented system for a flush.
It's a right pain in the backside connecting the flusher to the pump valves and then opening up the valves and flusher and guessing when you've emptied the F and E enough to cap the fill. Up and down into the loft and before you know it, you've emptied the upstairs rads !
I simply whack a jet swet in the fill from the F and E and push a speed fit onto the vent. Can start flushing in minutes and as I say, no need to cut and cap the fill.
Then I just take my time bailing out the F and E while the flusher does it's work and I don't end up dragging all the crud from tank down into the system.
Also used mine for putting a vacuum in a system a few times to change rad valves or motorised valves.
One thing I will say is that it's the only bung that you could have 110% faith in, once it's in, it's in and it won't come out till you take it out. Even left site once with it temporarily blocking a main.
A good bit of kit to have in the van
