Pay in 4 interest-free payments of $10.48 Learn more
Ships within 48 hours · Estimated delivery Sep 8 - Sep 13
this liquid line sight glass is a critical diagnostic tool to prevent compressor damage caused by moisture contamination or low refrigerant charge
this manual reset rollout switch is the standard OEM replacement for most furnaces under the Johnson Controls umbrella
It is commonly used for small banks of 24V sensors or as a local power source for building automation controllers
Most failures stem from carbon fouling or "sooting" and cracked ceramic insulators caused by improper mounting torque or excessive thermal cycling
Cleveland Controls DFS-221-156 Switch this liquid line sight glassThe Cleveland Controls DFS 221 156 is a heavy duty, fixed point air pressure sensing switch engineered for precision airflow verification in HVAC, duct heater, and combustion systems. As a direct FS BO 179 cross reference, this SPDT switch is factory calibrated to actuate on a pressure rise of 0. 05" w. c. (+ 0. 02"), making it a critical safety component for proving draft in boilers and furnaces. Its open mounted design is specifically optimized for