One of our winemakers was annoyed by air leaks between the racking wand
and the tubing. This is how he fixed it.
John Guest Fittings - How to make a connection...
SO, I have a 3/8 quick connect on both end and of course, the 3/8 tubing won't fit in it, however,
the 5/16 tubing will with persuasion (hot water). This leaves us with a dilemma on the other end of
the tubing in getting a 3/8 inch bottle filler on. That can also be attached by softening the
tubing in hot water.
I know that life is too short for all these things, but the less than perfect fit between racking
wand and tubing is annoying to several of our winemakers.
I have in a pinch, used dental floss (waxed), wrapping it around the tubing
then forcing that on. I don't think the flavor of the floss interfered with the wine. Tom has not
complained any about bubble gum wine....
John Guest Fittings — How to Make a Connection
Step 1 - Assemble the connection
Connecting standard John Guest push-in fittings. Push up to pipe stop.
Push the pipe into the fitting, to the pipe stop. The collet (gripper) has stainless steel teeth
which hold the pipe firmly in position while the 'O' Ring provides a permanent leak proof seal.
Pull to check secure
Pull on the pipe to check it is secure. It is good practice to test the system prior to leaving
site and/or before use.
Disconnecting standard John Guest push-in fittings
Ensure system is depressurized before removing fittings. Push in the collet against the face of
the fitting. With the collet held in this position the pipe can be removed. The fitting can then be
This is very snug. I guess I would leave it connected to the tubing.