Carrier HK02ZB027 Pressure Switch flare fittings rely on metal-to-metal

flare fittings rely on metal-to-metal contact for sealing

whereas an SPDT version only manages one circuit

You must always match the MFD rating exactly

Electrical specs (MFD and Voltage) are the priority

By utilizing this Bunn faucet replacement

Carrier HK02ZB027 Pressure Switch flare fittings rely on metal-to-metalThe Carrier HK02ZB027 is a critical OEM low pressure switch designed for precision monitoring in residential and commercial HVAC systems. This genuine Carrier part is engineered to protect the compressor by cutting the electrical circuit when refrigerant pressure drops below safe levels, effectively preventing overheating and potential burnout. This specific model, which is identical to HK02ZB027B, features a fixed setpoint of 27 PSI open and 67 PSI