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For veteran contractors managing high-efficiency hydronic systems
Smith commercial and residential boilers and water heaters
The cast iron E-Main valve is typically rated for a maximum inlet pressure of 250 PSIG at 450°F
Compact NPT Ports: 1/4" NPT inlet and outlet ports allow for easy installation in tight manifold assemblies
Lennox 46K72 Limit Switch 319852-301 For veteran contractors managing high-efficiencyThe Lennox 46K72 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial HVAC units. Engineered with a 250 degree Fahrenheit cutout and a 220 degree Fahrenheit reset, this auto reset limit switch prevents heat exchanger damage by breaking the electrical circuit if internal plenum temperatures exceed safe operating limits. This specific L250 30 model features a manual reset safety bypass or