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OEM Reliability: Direct physical and electrical replacement for McQuay 4EPB8040
using this HVAC safety switch ensures your furnace meets factory specifications for safety and efficiency
Failure is typically due to capillary fatigue from excessive vibration or chemical corrosion
ensure the torque requirements do not exceed the 5-10# specification of this pneumatic unit
Markel 05460702 Switch 319848-301 OEM Reliability: Direct physical andThe Markel 05460702 is a field proven air flow switch designed to provide precise differential pressure monitoring in heating and cooling applications. As the direct replacement for the legacy MRH 1505 DO, this switch is a critical safety component that confirms positive airflow within a duct before allowing heat kits or compressors to engage. Engineered for low pressure environments, it features a fixed setpoint of 0. 5" WC (water column), ensuring