An MV3-type dash control module with 1/4" NPT ports and M6x1-6H mounting holes, featuring a 1/8"-27 NPT auxiliary port. It has a trailer trip pressure of 20-45 PSI, tractor trip pressure of 20-40 PSI, and trailer override pressure of 20-30 PSI. This dash-mounted valve is used in the cab to control the tractor and trailer parking/emergency brake system, allowing the driver to apply or release the trailer's spring brakes from the dash. It's a Bendix MV-3 style aftermarket replacement, cross-referenced to Bendix numbers 65208, 800522, and 800584, and Mack 20QE3316M.
