What is the difference between the CSA certified and Maxitrol tested pressure ratings

this component eliminates the balance issues often found in universal alternatives

though the operating set-point must remain within the 1-20" W

do not use this kit on units equipped with the EF33CZ201 red knob valve

Johnson Controls D-3246-1 Damper Actuator Els PW 29614 What is the difference betweenThe Johnson Controls D 3246 1 Damper Actuator is a high performance pneumatic piston actuator designed for the precise positioning of large dampers and VF series butterfly valves in commercial HVACR systems. Built for durability, this unit features a die cast aluminum body and a 23. 4 sq. in. synthetic elastomer diaphragm, providing the high force output required for demanding air handling applications. The D 3246 1 is swivel mounted and includes a