Reliable Signal: High-purity copper tubing ensures low electrical resistance and stable millivoltage for the gas valve's power unit

fittings are typically sized by the Outside Diameter (OD)

including 21-957

The Lennox 18K44 Limit Switch is a high-reliability OEM replacement normally closed safety control designed for precise thermal management in residential gas furnaces and air handlers

the valve should be mounted with the coil in a vertical

Schneider Electric (Erie) 100-082 Repair Kit Els PW 17895 Reliable Signal: High-purity copper tubingSchneider Electric (Erie) 100 082 Valve Repair Kit for 1" NPT and 1 1 4" Sweat Two Way General and Steam Service PopTop Series Valves with 8. 0 Cv