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Common Questions How do I know if my sensing probe needs replacement
What is the tonnage rating for this expansion valve
preventing the voltage drops or arcing often associated with generic aftermarket alternatives
Does this valve support high-capacity furnace and boiler loads
Johnson Controls A28PJ-1 Agricultural Thermostat 30067439-890 Common Questions How do IThe Johnson Controls A28PJ 1 is a commercial grade two stage temperature control engineered for precision in demanding environments such as livestock confinement, nurseries, and greenhouses. This agricultural thermostat features two SPDT switches and a liquid filled, 1 3 8" x 2 1 4" coiled sensing bulb for high accuracy response. Built into a rugged NEMA 4X enclosure, the unit resists moisture, dust, and corrosive vapors common in barn and dairy