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excessive scale buildup can also prevent the pilot piston from seating correctly
and mixed air control
Advanced Safety: Contains localized logic for flammable vapor sensor monitoring and high-limit ECO (Energy Cut-Off) protection
Its heavy-duty construction is built for rooftop unit (RTU) and split system environments
Lennox 12J41 TXV 318973-401 excessive scale buildup can alsoFor veteran technicians looking to restore factory spec refrigerant metering, the Lennox 12J41 TXV (also identified as model 103366 13) is the precise OEM solution for R 410A systems. This thermostatic expansion valve is engineered for 3 ton (and some 3. 5 ton) outdoor units, featuring a 3 8" ODM inlet and a 1 2" ODF outlet. Unlike standard non bleed valves, this unit includes a 5% bleed port, which assists in pressure equalization during the off