Johnson Controls A-4000-138 Station Refrigerant and non-corrosive gases typically found

and non-corrosive gases typically found in HVAC and industrial process loops

this specific thermostatic expansion valve is calibrated for the pressure-temperature characteristics of R-22 and should not be used in R-410A applications

this sensor offers the wire length necessary for flexible routing to control boards or terminal blocks in larger package units and split systems

How do I clean the long barrel probe to prevent nuisance shutdowns

and check the 80V HSI for continuity

Johnson Controls A-4000-138 Station Refrigerant and non-corrosive gases typically foundThe 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