The Cleveland Controls DFS-221-222 is a dependable, fixed-setpoint air flow switch engineered for reliable detection of air movement in HVAC, combustion, and ventilation systems. Designed with a Single-Pole Double-Throw (SPDT) switching action, this unit is factory-set to operate on a pressure rise of just 0.05″, making it ideal for low-differential pressure sensing applications where precise airflow confirmation is critical.
Key Features
- SPDT switching action for versatile control circuit integration
- Fixed setpoint — operates on pressure rise at 0.05″
- Wide voltage range: 120–277Vac for compatibility with commercial and industrial systems
- 1/4″ barbed connections for easy tubing attachment
- Maximum operating pressure: 1/2 PSI (0.5 PSI)
- Compatible with air and combustion by-products that will not degrade silicone
Application
The DFS-221-222 is well-suited for use in forced-air furnaces, air handlers, ventilation systems, and combustion equipment where proof-of-flow verification is required. Its silicone-compatible design allows safe use in environments where combustion by-products may be present, provided those by-products do not chemically attack silicone materials.
Specifications
- Brand: Cleveland Controls
- Model / SKU: DFS-221-222
- Switch Type: SPDT (Single-Pole Double-Throw)
- Operating Setpoint: Fixed at 0.05″ pressure rise
- Voltage Rating: 120–277Vac
- Connection Type: 1/4″ barbed
- Maximum Pressure: 1/2 PSI
- Media Compatibility: Air or combustion by-products that will not degrade silicone
