Cleveland Controls DFS-221 Switch Key Benefits for Contractors Exact

Key Benefits for Contractors Exact OEM Compatibility: Serves as the official 8402-048 replacement

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

This prevents localized overheating caused by restricted airflow

Heavy-Duty Bearing: Features an integrated bearing assembly built for high-RPM operation in continuous-run blowers

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

Cleveland Controls DFS-221 Switch Key Benefits for Contractors ExactThe 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