Carrier HK02YA450 Pressure Switch 320734-701 ensure you are using the

ensure you are using the correct Macon steam air vent and valve configuration

Use this HVAC part to restore system integrity and maintain proper pilot flame stability

making it a reliable drop-in replacement for aging pneumatic controls in commercial facilities

Nipple for 1/4" Tubing

Carrier HK02YA450 Pressure Switch 320734-701 ensure you are using theThe Carrier HK02YA450 High Pressure Switch is a critical safety component designed for HVAC high pressure cutout applications in commercial and residential systems. This SPST (Single Pole Single Throw) safety switch is calibrated to open at 660 PSI and reset at 505 PSI, ensuring the compressor and refrigerant circuit are protected against catastrophic failure due to excessive head pressure. Engineered for R 410A refrigerant compatibility, this manual