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75" water column switch is the direct replacement to restore factory-spec performance and safety bypass protection
Technicians should verify electrical continuity across the leads to confirm a burnt-out element
Check your series build date to verify
Durable Sleeve Bearings: Optimized for low-vibration operation and extended service life in vertical or horizontal airflow configurations
3" WC for optimal natural gas flow and burner efficiency
Trane VAL2979 TXV 319847-401 75" water column switch isThe Trane VAL2979 TXV is a critical fluid metering component engineered to maintain precise superheat control in 4 ton HVAC residential air conditioning and heat pump systems. Designed for high reliability applications, this thermostatic expansion valve features 1 2 inch ODF inlet and outlet connections, facilitating a robust sweat fit installation for professional technicians. By modulating refrigerant flow into the evaporator coil, this OEM
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