This is the Pingel version of the vacuum line from intake #6.
Very few people have the Pingel 1311 CHV, and most of those people will just stretch the heck out of an undersized nitrile tube to hook it up. This ad runs here on eCrater for free, so we can sell one of these per year without losing money. Ooooo, we like that business model.
The product is made of two sizes of Viton B tubing, joined with a Kynar laboratory grade fitting. There is Teflon FEP tubing inside each of the Viton B tubes for support under vacuum. The 2 smaller tubing clamps are Happy Fingers style (loops on the ends to keep from puncturing your fingertips) but the 2 bigger tubing clamps still have sharp ends and made of 17-7 PH stainess steel. This vacuum line is designed to work for many years under realistic conditions, and can be disconnected and reconnected as many times as you want, like for example every time you pull the tank to replace the air filter.
Per popular request, the bend in the petcock end of the line has been discontinued.