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If the furnace blower runs constantly while the burners fail to ignite
It is primarily designed for integration within Carrier’s structured zoning architecture
providing enough power to overcome resistance in well-maintained ducts
This control is primarily utilized as a constant cut-in cold control for commercial refrigeration units
Leak-Free Integration: High-tolerance threading ensures a secure seal for pneumatic pilot positioners and sensing lines
Trane VAL9574 TXV 321702-401 If the furnace blower runsThe Trane VAL9574 is an 8 ton thermostatic expansion valve (TXV) designed for high capacity R 410A refrigerant systems. This OEM refrigerant metering device features a 5 foot capillary tube and a 1 2" x 7 8" brazed connection profile, ensuring a precise fit in heavy duty air handlers and evaporator coil assemblies. Engineered for durability, the VAL9574 utilizes a forged brass body and a stainless steel power element to resist corrosion in demanding