Tubing

[Jeff]

Anyone have a recommendation on tubing for high alcohol transfers. I have been trying to find an acceptable tubing for a peristaltic pump.

Jeff

[will]

chem-durance

[Vigneron/Xpressfill]

We use polyethylene tubing in our machines that bottle a variety of alcohols

[will]

Judes is right. I had only considered the tubing inside the pump. For the bulk transfer you would not want to use stuff that's over a buck a foot, just use polyethylene or polypropylene. ...and make sure it's food grade. Avoid polyvinyl tubing of all types.

[Sherman]

If you are very concerned about contamination or chemical resistance there are several suppliers of both suction side and pressure side lined hoses for bulk transfer. One such supplier is http://puretransfer.com/hose/smooth-bore-ptfe.html who has both EPDM and PTFE lined hoses. PTFE is commonly known as Teflon and is excellent and insoluble in every known solvent. It is attacked only by molten alkali metals and by fluorine at high temperatures.

Of course it is not cheap but it sounds like a one time investment.

[daveflintstone]

I use PVC flexible tubing, mainly because it was the only 1" diameter available close by. It's clear so it's easy to see the fluid transferring, which is nice. As long as you don't need sharp bends in the run, otherwise it can pinch closed.