Models View all Max-Air MA-63252 1/4" NPT Air Filter Regulator 16 318 1 1/4" actuated ball valve 20 589 2 1in NPT Ball Valve 3pc SS 24 680 1 Valve Gear Operator GO-01-ISO 22 938 2 3/4" NPT Actuated Ball Valve 41 1863 10 Electric Actuator Max-Air AE01-AE02 11 442 2