Proportioning Valve
Be careful with the Inline Tube Proportioning Valve.(and it's really just a distribution block).
I bought one from Inline and it was junk, I looked on the internet and found that a high percentage of them were not machined properly and that Inline Tube was still selling them.
I ended up rebuilding the original one that I had already and used some parts off the new one I bought.
Here is a company that sells rebuild kits.
www.musclecarresearch.com
Paul
Paul