Johnson Controls A-4000-138 Station 30067439-890 the 47743's rugged construction ensures

the 47743's rugged construction ensures it maintains its structural integrity even in harsh operating environments

Precise Differentials: Maintains a 3 1/2 degree differential for each stage with a 3 degree fixed inter-stage differential for stable ambient temperature control

or a "no heat" call where the 24V gas valve solenoid is energized but fails to open the internal port

Optimized Performance: Enhances system longevity by preventing the unnecessary mechanical stress of timed defrost cycles in dry or mild conditions

What are the physical dimensions

Johnson Controls A-4000-138 Station 30067439-890 the 47743's rugged construction ensuresThe Johnson Controls A 4000 138 is a professional grade remote mounted pressure reducing station engineered to maintain precise pneumatic control system performance. This unit effectively regulates output pressure within a tight 0. 02 psi tolerance, even when managing input pressure variations of up to 20 psi. Designed for rigorous HVACR environments, it handles a maximum input pressure limit of 300 psig and provides a reliable air flow capacity of 25