PRESSURE PROTECTION VALVE USED ON M35A3 AND SOME M939 SERIES TRUCKS. ALSO USED IN AIR POWER STEERING EQUIPPED M35A2 MODELS. 

INLUDES PLUGS TO BLOCK OFF UN USED PORTS. OPENS AT 65 PSI, CLOSES AT 45 PSI. 

PART #  12450226, RCSK15078, KN-31000 NSN 4820-01-408-5662, 4820014085662