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this is a convertible gas valve assembly
making it ideal for cooling tower sump heaters and agricultural ventilation
protecting the heat exchanger from thermal stress caused by low-flow or no-water conditions
The HH18HA120 is typically an automatic reset switch that resets once the ambient temperature falls back within the 30F differential range
eliminating the need for hub adjustments or pitch modifications during field repairs
Trane SWT2686 Limit Switch THPU32HP7Y this is a convertible gasWhen you are looking for a reliable Trane SWT2686 Limit Switch replacement, ensuring the correct thermal calibration is critical for system safety and furnace uptime. This OEM Trane heating part is a 125 155F AUTO limit switch, specifically engineered to act as a primary safety control by monitoring discharge air or internal plenum temperatures. It features a precise 125 degree opening temperature and resets automatically at 155 degrees, preventing