Trane VAL2979 TXV 324846-701 Always inspect the collector box

Always inspect the collector box gasket when installing this HVAC exhaust blower to prevent flue gas leakage into the cabinet

Featuring a precision-engineered 7/64" orifice

System Integrity: Unlike adjustable aftermarket switches

serving as the primary gas control valve to regulate manifold pressure and ensure optimal combustion efficiency

Trane VAL2979 TXV 324846-701 Always inspect the collector boxThe 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