Demco Air Force One Check Valves

[Neal]

Found them as Demco Part Number off etrailer.com and ordered one just now.

Link?

 

[Chuggs]

https://www.etrailer.com/s.aspx?qry=demco+check+valve&furl=-vw-1-pg-Accessories_and_Parts

I actually looked at my initial install and I see two green/black check valves. So, I had them cancel the initial order and ordered two. I'm not much for messing around with see if?...I just want to swap and know it's all gonna work. With two...there is one on each vacuum source...Engine, and SMI control box.

 

[Chuggs]

Wow! No Plan, Thanks again for posting this thread. My etrailer order arrived...and this morning I went out to replace the two check valves. The one between the TEE and the AF1 was totally blown out. You can see light thru it. This very negatively affected our Braking performance while driving...because a lot of the vehicles own vacuum was being lost thru the AF1 vs going to the Brake Booster.

The new check valves twist apart...so I wrapped some tape around them just in case. Old Style (Left) vs New Style (Right)
I can see daylight!!...Not good!


New Check Valve Installed ...



Stuck the Vacuum Guage on the AF1 end....Engine Running... Zero Suction --- new check valve is GOOD!!!