For pressurized applications

This board is engineered to interface seamlessly with commercial water heaters and high-efficiency boilers

making it a staple for maintenance and repair operations

Designed to resist water hammer and hydronic shock

Is this board compatible with both single-phase and three-phase units

Lennox 13Y20 TXV Valve 321142-301 For pressurized applicationsOptimize your outdoor cooling configuration with the Lennox 13Y20 4 Ton R410 TXV Valve, a mission critical thermal expansion device designed for precise refrigerant metering. This forged brass valve is engineered specifically for 4 ton air conditioning systems and heat pumps, ensuring that the evaporator coil remains effectively fed without the risk of liquid slugging. With a 1 2 inch FNPT inlet and 3 8 inch FNPT outlet, the 13Y20 integrates