The largest tubing that Allied lists in their "universal" matched slide tubing section is .775" bore as inner slide and matching outer slide tubing.Mark Finley wrote:I'm going to start a 5th valve project for my 601, and where I'm putting it either .835 or .795 bore tubing will do.
I'll need one right angle, a 2nd valve crook, and a couple feet of straight tubing. I already have the valve and a couple feet of 835 tubing, but I could use more if I can get it as inner tubing to go with the 835 outer
In that size, is that something that my local repair shop should be able to order from allied or badger, or is that something more complicated to get a hold of?
This guy enumerates .720" - .930" ID tubing but doesn't specify whether he has matched outer slide tubing, send him a message. You will probably have to bend your own crooks but maybe ask him about that as well. Good luck!
https://www.ebay.com/itm/182352003193