Cleveland Controls DFS-221 Switch Always check the pressure drop

Always check the pressure drop across the drier before assuming a leak

The high-sensitivity crystal element utilizes accurate color calibration to monitor refrigerant moisture content across CFC

The Watts 0887124 Seal Kit (listed interchangeably as Watts 887124) is a critical field-service solution designed specifically for repairing the relief valve assembly on 3/4" to 1" Watts Series 909 Reduced Pressure Zone (RPZ) backflow preventers

This prevents localized overheating caused by restricted airflow

and JR series

Cleveland Controls DFS-221 Switch Always check the pressure dropThe Cleveland Controls DFS 221 Air Flow Switch is a high precision, factory set differential pressure switch designed for air proving in demanding HVAC and energy management systems. Engineered to detect positive, negative, or differential pressure, this SPDT air pressure sensing switch is factory calibrated to operate on a pressure rise at 0. 05" 0. 02" w. c.. Its non adjustable design ensures consistent performance in duct heaters, ovens, and