Description
The EWC Controls URD-12 is a 12-inch round zone damper engineered for reliable, precise airflow control in residential and light commercial HVAC zoning systems. Featuring an integrated floating actuator, this damper delivers positive power-open and power-closed operation, ensuring tight shutoff and accurate zone isolation every time.
Key Features
- 12-inch round damper designed for standard round duct installations
- 24Vac operating voltage — compatible with virtually all residential and commercial zone control panels
- 18 in/lb actuator torque for dependable blade movement and positive seating
- Three-wire, floating actuator control for power-open and power-closed operation
- Power Open / Power Closed design eliminates reliance on spring-return, providing positive control in both directions
- Floating control signal allows proportional positioning between open and closed
- Suitable for use with EWC Controls zone panels and most industry-standard zoning systems
Why Choose the URD-12?
The URD-12’s power-open/power-closed floating actuator configuration makes it ideal for applications where reliable, bidirectional blade control is critical. Unlike spring-return dampers, the three-wire floating design holds the damper in its last commanded position during a power interruption, reducing unnecessary cycling and wear. The 24Vac input ensures broad compatibility with zone panels from EWC Controls and other leading manufacturers.
Typical Applications
- Residential HVAC zoning systems
- Light commercial multi-zone air distribution
- Variable air volume (VAV) bypass and zone control
- New construction and retrofit round duct installations
Specifications
- Model: URD-12
- Duct Size: 12 inches (round)
- Voltage: 24Vac
- Actuator Torque: 18 in/lb
- Wiring: Three-wire
- Control Type: Floating (Power Open / Power Closed)
- Brand: EWC Controls
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