Variable Length Tube....

CothermanDistilling

I was thinking of a variable length tube....

Start with a 2" sight glass union, remove the glass and make a tapered teflon compression ferrule, weld a short 2" TC ferule to the butt-weld end. Now obtain a stainless tube that just fits inside of it, and you have a variable length tube, you can add as long of a regular TC pipe on as you need to house the inserted length of smaller tube...

Requires:

• Sight glass union with ferrule welded to it
• Smaller OD 2" tube with one 2" TC end
• Special teflon tapered compression ferrule

Thinking about this, if the inner tube was very smooth, and you had a custom silicone gasket made with a smaller ID, you could eliminate the sight glass union. take the smaller OD pipe with a smooth surface, slide a short ferrule onto the pipe, carefully slip the gasket over the pipe to the desired length, slide the tube in the regular TC tube, clam the ferrule to the pipe. (optionally tape up or sleeve and clamp the seam for an extra measure of safety if you desire)

Requires:

• Smaller OD 2" tube with one 2" TC end (polished OD finish)
• Custom silicone gasket with smaller ID
• Short ferrule

obviously, the 2nd idea is easier, and I give all rights to SD...

-mike

FullySilenced

Kinda like the slip joint on the J for a sink drain?

Kapea

You would do this so you can play your still like a slide-whistle? (Or maybe a trombone?)

jacksonbrown

Expansion joint? They exist.

CothermanDistilling

@FullySilenced said: Kinda like the slip joint on the J for a sink drain?

Exactly... well, alcohol friendly, but yes

FullySilenced

i assume for easy assembly and take down on a stationary setup... or a mobile setup that you just re position... almost back to the same spot every time....