Johnson Controls A-4000-138 Station Refrigerant this sensor offers the wire

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

maintaining identical electrical specifications and mounting points

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What causes a humming or chattering noise during operation

Johnson Controls A-4000-138 Station Refrigerant this sensor offers the wireThe 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