Lennox 31W67 Relay Sequencer 320074-702 marked 'S' for the supply

marked 'S' for the supply line and 'O' for the output signal

For contractors looking to optimize quarter-turn valve automation

the 100262940 is specifically calibrated for natural gas

This valve is built with high-grade brass to resist corrosion and ensure long-term reliability in demanding outdoor mechanical environments

Rated at 10

Lennox 31W67 Relay Sequencer 320074-702 marked 'S' for the supplyThe Lennox 31W67 Relay Sequencer is a critical multi staged control component designed for electric furnace sequencer replacement and HVAC system timing management. This HVAC sequencer relay functions as a technical conductor, utilizing a stacked relay design to coordinate the activation of heating elements, blowers, and compressors in a precise sequence of operation. By staging electrical loads, the 31W67 prevents circuit overloads and nuisance