Part for Bus Air Brake System

Posted May 25, 2019, 5:04 PM UTC
26

Posted May 25, 2019, 5:04 PM UTC
Hello,
I'm trying to replace a missing part on my bus. I bought the bus without this part. I took this photo of a similar school bus and determined it's in the same place in the air brake system.
Pressure Manifold? Looks like it houses a diaphragm.
Bendix QR-1 or equivalent.
Air brake quick release valve