Help with a Vintage Direct Connection Part – Proportioning Valve

[Musclesigns]

Does anyone have access to a late-80s/early-90s Direct Connection Catalog? I am trying to find information on a NOS Direct Connection adjustable proportion valve that I have (Part Number P4120999). I found a couple general references via google searches but would like to know more details about the application and specifications. Thanks for any assistance!

 

[Firstblood]

Identical to mine, Here's the instruction sheet.

 

[Musclesigns]

Awesome, thanks!!!