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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
This specifies the exact pressure (measured in water column) required to actuate the internal diaphragm and close the electrical circuit
it is functionally identical to part numbers 57W78 and 57W7801
Built for OEM HVAC replacement parts reliability
eliminating the need for field modifications to the pilot assembly
and multiple OEM part numbers from Trane and Amana
Lennox 78H40 Expansion Valve THPU32HP7Y This specifies the exact pressureThe Lennox 78H40 Expansion Valve is a critical 6 ton thermostatic expansion valve (TXV) engineered for precise refrigerant metering in high capacity light commercial and residential cooling systems. As a veteran grade HVAC replacement part, the 78H40 (identical to Lennox 78H4001) regulates refrigerant flow into the evaporator coil by sensing heat load changes, preventing liquid slugging and ensuring the compressor receives superheated vapor. This TXV
US$ 149.95
US$ 42.95
US$ 27.14