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Turning the adjustment stem clockwise increases the spring tension
the probe serves as the primary communication link with the gas valve
ensuring consistent climate control across heating and cooling cycles in residential or light commercial environments
this should only be performed by a qualified technician using a multimeter to confirm the circuit closes at the correct flow rate
Trane VAL12789 TXV 320074-702 Turning the adjustment stem clockwiseThe Trane VAL12789 TXV is a critical OEM replacement thermal expansion valve designed for high capacity 6 ton residential and light commercial evaporator coils. Engineered specifically for R 410A refrigerant systems, this thermostatic expansion valve maintains precise superheat by modulating flow based on the thermal load, preventing liquid slugging and protecting the compressor. Featuring a 79 PSIG outlet pressure rating, it ensures balanced