The 1/2" x 3 7/16" flat shaft and CCW lead end rotation ensure compatibility with specific Rheem and Ruud residential condensing units

this Emerson A-F-D cartridge is the standard for protecting expensive system components in residential and commercial applications

ensuring reliable heat transfer in harsh outdoor environments

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

this model comes with pre-stripped wire leads for primary and secondary connections

Belimo ZONE220S-50 Actuator 30067439-890 The 1/2" x 3 7/16"The 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