This Carrier HVAC temperature sensor is essential for contractors looking to restore factory-spec performance in residential split systems and light commercial packages

While it monitors the plenum temperature

When replacing legacy compressor start relays

If you are seeing discharge from the relief valve vent

Trane VAL8719 TXV 318973-401 This Carrier HVAC temperature sensorThe Trane VAL8719 expansion valve is a precision engineered OEM replacement part designed for high performance HVAC 3 ton systems. As a veteran grade thermostatic expansion valve (TXV), this component features a 3 8 inch inlet and a 1 2 inch outlet, optimized for R410A refrigerant flow regulation. This valve maintains a critical pressure rating of 89 85#, ensuring the evaporator coil operates at peak efficiency by accurately modulating refrigerant