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Constructed for industrial durability to handle high-temperature HVACR applications
this specific thermostatic expansion valve is calibrated and designed exclusively for R-22 refrigerant systems
High Amperage Rating: Rated for 40 amps to handle high-demand compressor startups and continuous run cycles
it breaks one leg of the power supply
Dwyer Instruments 1900-1MR Pressure Switch 320074-702 Constructed for industrial durability toThe Dwyer Instruments 1900 1MR is a professional grade differential pressure switch designed for critical monitoring of air and non combustible gases. This compact low pressure switch features a manual reset mechanism, ensuring the system remains locked in an alarm state until a technician can verify the cause of the pressure deviation, making it an essential component for HVAC safety limit applications. With an adjustable range of 0. 4" w. c. to 1.