The spring-loaded

secure installation during a service call

A pilot-loaded or servo-operated design like the Maxitrol 220E utilizes internal gas pressure to assist in positioning the main valve

Running this component on 115V will cause primary winding failure and will not provide the necessary torque to drive the fan blade

Belimo ZONE220S-50 Actuator 30067439-890 The spring-loadedThe Belimo ZONE220S 50 is a high performance 2 way zone valve actuator designed for precise hydronic control in commercial and residential HVAC systems. Featuring a 3 4" sweat connection and a 5. 0 Cv rating, this motorized valve assembly provides reliable shut off and modulating services for fan coil units, baseboards, and radiant manifolds. The spring return mechanism ensures the valve returns to its fail safe position during power loss, preventing