Carrier HK06MB021 Pressure Switch 320819-301 especially in open loops or

especially in open loops or systems with high oxygen content

Are mounting clips required for this model

Constructed for CCW rotation (counter-clockwise)

This genuine factory component is heat-resistant and ozone-treated to resist cracking and drying out in the harsh environment of a furnace or air handler cabinet

Carrier HK06MB021 Pressure Switch 320819-301 especially in open loops orThe Carrier HK06MB021 Dual Pressure Switch is the primary OEM replacement part for the now obsolete HK06NB021. Engineered for Carrier, Bryant, and Payne HVAC units, this factory authorized component manages critical safety parameters by monitoring induced draft blower performance and refrigerant line pressures. Calibrated to a specific 0. 78 W. C. pressure setting, this differential pressure switch prevents the heating or cooling cycle from continuing