JG Speed fit

[Cheshire-cheese]

To those that use these fittings: Do you, as I would have thought, use the inserts to hold the shape of the tube?

[edit1now]

What tube are you thinking of? Ordinary vinyl tubing doesn't work all that well pushed into JG fittings - it might be better to buy some hose barb stems to go between the tube and the fittings. Stiff beer line works really well.

In the larger sizes (domestic plumbing) I think you're supposed to use inserts with barrier pipe and blue water pipe.

[Cheshire-cheese]

It's in relation to the gas line from my regulator to my cornie. It came from Norm pre-fitted with speedfit fittings. I had a leak in the system somewhere and found that the tubing wasn't fitted with any kind of insert. I've since put an insert in which did make the tubing a struggle to fit but it's now in and no sign of a leak.

[dubboy]

if it the hard gas stuff norm usally sells should need one but if the tube at the jg speedfitting is bent at a sharp angle then it will leak so it either needs to go in a curve to the keg or straight and not at a tight angle.

[adm]

I don't use any inserts, but i do use the JG Speedfit fittings everywhere - mainly in 3/16" (so I can't really even see that an insert would be feasible) and have no problems with gas leakage. I did find that the place where I originally got leakage problems was at the corny posts, where the JG fitting screws onto it - easily sorted with a gentle nudge with a spanner and been good as gold ever since.

The pipe is use is hard walled though....not sure what plastic it is, but it's "standard beer/gas line" as far as I know.