Heil Quaker ICP 1178405 TXV Valve 320074-702 the 591-391-919 is specifically for

the 591-391-919 is specifically for Series 4 units

Extensive 40' Capillary: Provides the necessary reach for total coil face monitoring in large commercial AHUs and RTUs

Always verify the input voltage and terminal configurations against the original wiring schematic to prevent board failure

it ensures seamless integration without the need for extensive piping modifications in existing Trane and American Standard units

If the furnace is failing to ignite due to a pressure switch lockout

Heil Quaker ICP 1178405 TXV Valve 320074-702 the 591-391-919 is specifically forThe Heil Quaker ICP 1178405 TXV Valve is a critical OEM replacement part designed for high capacity R410A refrigerant systems. This thermostatic expansion valve features a 7. 0 ton cooling capacity and is engineered as a non bleed (NONBLD) metering device, ensuring precise liquid refrigerant flow into the evaporator coil without pressure equalization during the off cycle. Built for HVAC system efficiency, it utilizes a 5 8 inch ODF inlet and a 7 8