Lennox 78L19 Expansion Valve Refrigerant making it a reliable solution

making it a reliable solution for technicians requiring a low-voltage solenoid coil for air

or 5-2 scheduling with a 2-pipe fan coil changeover input for seasonal efficiency

ensuring the system shuts down immediately if a flame is not detected

but ensure the Teflon sleeve is seated correctly to maintain a pressure seal

Lennox 78L19 Expansion Valve Refrigerant making it a reliable solutionProper refrigerant metering is the backbone of any reliable HVACR system, and the Lennox 78L19 Expansion Valve is a critical component for maintaining precise superheat. Designed for high performance residential and light commercial equipment, this Thermostatic Expansion Valve (TXV) is chemically compatible with both R 410A and R 22 systems. The 78L19, which is identical to 78L1901, features a durable brass body with threaded connections, making it a