Johnson Controls A-4000-138 Station 30067439-890 the Field Controls 46491600 with

the Field Controls 46491600 with the plastic base (GMA-PL) is the current standard replacement for older GVD models

This specific model supports both floating control and two-position control

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

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

Johnson Controls A-4000-138 Station 30067439-890 the Field Controls 46491600 withThe 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