Does Check Valve Install Before and After Tee for Install of Second Vehicle Kit Invisibrake

Updated 04/07/2026 | Published 04/04/2026

Question:

I am confused about the check valve that gets installed in the air line. The 2nd vehicle kit comes with 2 check valves and 2 tees.. The Check Valve Installation guide shows a check valve in the line from the Invisibrake Controller to the tee and a check valve after the tee. Yet the install videos show 1 tee and check valve.So, I am assuming that I use either tee and check valve depending on hose size. I dont install both check valves. Correct? Thanks

asked by: Tom K

Expert Reply:

Hey Tom, yes you are correct. It comes down to the hose size that you have like you mentioned whether you use one or the other. What size hose do you have?

expert reply by: Jameson C