it serves as the direct upgrade for legacy part number S1-026-42550-000

for optimal performance and to achieve published capacities

continuous flame adjustment without the lag or maintenance requirements of mechanical actuators

making it a reliable boiler protection part for rigorous contractor applications

which would render the capillary gas control inoperable

Lennox 25W28 TXV 340155-7026 it serves as the directThe Lennox 25W28 TXV is a precision engineered 5 ton thermal expansion valve designed specifically for maintaining optimal refrigerant flow in high capacity residential and commercial HVAC units. As an OEM Lennox replacement part, this valve is critical for technicians troubleshooting evaporator coil freeze ups or hunting issues in older R22 refrigerant systems. The 100679 07 expansion valve regulates the liquid refrigerant entering the evaporator