and TH8321 VisionPRO models

Always verify the part number in your specific unit's illustrated parts list

This gas regulator replacement spring ensures your equipment maintains positive dead-end lock-up and precise control from full flow down to pilot flows

this high-stability 0

Common Questions: Can I use the 90-291Q to replace a DPST relay

Copeland Comfort Control (White Rodgers) 3L09-12 Limit Switch and TH8321 VisionPRO modelsThe Copeland Comfort Control (White Rodgers) 3L09 12 Limit Switch is a high reliability 1 2" bimetal disc limit control engineered for precision high limit protection in residential and commercial furnaces. This board mounted HVAC limit switch features a fixed open temperature of 220F and a fixed close temperature of 180F. Operating on an open on rise switch action, it serves as a critical safety component to prevent heat exchanger damage or hazardous