What type of hose to use for a -80 chiller

[TheVanillaGorilla]

Chiller Pump

I don’t know if this helps you any but- You can make your own semi-cryo tubing to keep your thermal loss at a minimum by using ridge metal tubing then using another tube a bit bigger and insert the smaller tube inside of it put the smaller tube centering the smaller tube with washers on either end. You weld the washers to both center tube and outer tube. Outer tube should have a hole drilled into it and a valve much the same as an ac gas filling valve welded on to that hole. You vacuum the spac…