Use to have one of them, the only problem I had was the see-through level tube warped and started leaking. But with a jubilee on a 19mm ID tubing you can make it air tight onto a 15mm ID head. Will need a extra tighten every so often but then it will be magical and be sealed tight. I achieved this on couplin silicon which is very thick and stiff, so if I can compress that to a 15mm diameter i'm sure you can