The AIRman B2400-B82 is a heavy-duty quick-release valve with a 1/4" NPT connection, designed for suspension dump and lift axle applications. This compact and reliable valve is engineered to quickly exhaust air from an air spring, providing rapid response for a variety of pneumatic systems. Width: 2” Height: 2” Thickness: 1.3” Cross-Reference: Ridewell 1230078, Hendrickson R004348-1, Norgren QEV13AA1H00S, Humphrey QE4, Hendrickson R0043481, Automann 170.QR1401A, QR2 Application: Suspension Dump, Lift Axle