Introduction
The SKC-R series dampers by MADEL are designed for balancing ventilation systems. These dampers are suitable for rectangular duct mounting and maintain constant air volume despite varying pressures due to system changes, filter clogging, wind effects, and more. They operate automatically without external energy sources, using a spring mechanism.

Classification and Material
The SKC-R/MA model includes a manual device for setting one flow. The dampers are constructed from galvanized steel with rubber tightness joints.

Fixing Systems and Finishes
The dampers are designed for connection into rectangular ducts and are finished in galvanized steel.

Specifications
The dampers are supplied and mounted to facilitate ventilation system balancing. They are available in various sizes (LxH mm) and are constructed from galvanized steel with rubber joints.

Performance Data
The document includes detailed tables and graphs showing face velocity, pressure loss, and sound power levels. Key data points include:

• Face velocity ranges from 0.02 to 0.2 m/s.
• Pressure loss (D Pt) is detailed across various face areas and velocities.
• Sound power levels are indicated for different flow rates (Q m³/h).

Dimensional Data
The dampers are available in multiple sizes, with dimensions provided for both minimum and maximum flow rates. The document includes a comprehensive list of available sizes for different duct dimensions.

Conclusion
The SKC-R dampers are a reliable solution for maintaining constant air volume in ventilation systems, offering flexibility in installation and operation without the need for external power sources.