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maintaining the original equipment’s performance curve
this device features a reliable 1/2-inch NPT connection for seamless integration into the boiler shell or external manifold piping
Energy Efficiency: Prevents unnecessary defrosting
The forged brass construction and nickel-plated stem provide the durability needed for closed-loop systems
Designed with a high-strength aluminum housing and a resilient Buna-N diaphragm
Carrier HK02ZB054 Pressure Switch 320788-704 maintaining the original equipment’s performanceFor mid to large scale commercial and residential HVAC units, the Carrier HK02ZB054 Pressure Switch is a critical safety component designed to maintain peak system performance. This 78 54 PSI low pressure switch effectively prevents compressor damage by interrupting the control circuit if refrigerant levels drop below safe operating thresholds. Operating on a 24V signal, this OEM Carrier replacement part is calibrated to open at 78 PSI and close at 54
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