Johnson Controls VA-7150-1001 Valve Actuator Freon What is the difference between

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Johnson Controls VA-7150-1001 Valve Actuator Freon What is the difference betweenThe Johnson Controls VA 7150 1001 is a commercial grade, 24Vac synchronous motor driven actuator designed for floating control (three wire incremental) of globe valves in demanding HVACR applications. This non spring return actuator delivers a minimum of 90 lb in (400 N) of seating force, ensuring positive closeoff across a variety of service conditions. Engineered for versatility, it features a stroke range of 5 16" to 25 32", making it an ideal