Lennox 78L19 Expansion Valve R-410A ensuring a tight tolerance connection

ensuring a tight tolerance connection that prevents mechanical hysteresis

The Sensus 143-IRV-HP is typically rated for a maximum inlet pressure up to 125 PSIG

5-inch mounting ring

System Efficiency: Restores the airtight seal of the furnace venting system

Can I use this to replace a manual reset switch

Lennox 78L19 Expansion Valve R-410A ensuring a tight tolerance connectionProper 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