Description
The Cleveland Controls DFS-448-153 is a precision-engineered air flow switch designed for reliable detection of air movement in HVAC, combustion, and ventilation systems. With a fixed trip point set to operate on pressure rise at .05″ ± .02″ w.c., this switch provides consistent, repeatable performance for proving air flow before or during burner operation, fan proving, and safety interlock applications.
Key Features
- SPDT (Single-Pole, Double-Throw) switching action for versatile circuit control
- Fixed setpoint: operates on pressure rise at .05″ ± .02″ w.c.
- Wide voltage range: 120–277Vac for compatibility across commercial and industrial applications
- 1/4″ barbed pressure connections for quick, secure tubing attachment
- Maximum pressure rating: 1/2 PSI
- Compatible with air and combustion by-products that will not degrade silicone internal components
Specifications
- Model: DFS-448-153
- Switch Type: SPDT
- Operating Setpoint: .05″ ± .02″ w.c. (pressure rise)
- Voltage: 120–277Vac
- Connection Type: 1/4″ Barbed
- Maximum Pressure: 1/2 PSI
- Media Compatibility: Air or combustion by-products that will not degrade silicone
Applications
- Fan and blower proving in HVAC air handling systems
- Combustion air proving for furnaces and boilers
- Safety interlock circuits requiring air flow confirmation
- Ventilation and exhaust system monitoring
The DFS-448-153 is built to Cleveland Controls’ exacting standards, offering a dependable solution for OEM and field replacement applications where accurate, low-differential pressure switching is critical to system safety and efficiency.
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