RDTM Multi-Blade Tight Regulation/Shut-Off Damper
RDTM Multi-Blade Tight Regulation/Shut-Off Damper
A heavy-duty, airtight multi-blade damper for rectangular ducts. Combines precise airflow regulation with leak-tight Class 3 shut-off capability. Features EPDM-gasketed blades, low-torque operation, and high fire safety ratings for demanding applications.
Product Description
Key Features & Benefits
Technical Specifications
Size Range (A x B)
200 x 200 mm to 2000 x 2000 mm
Body Length (L)
160 mm
Leakage Class
Casing: ATC 3. Closed Blade: Class 3 (Airtight).
Max. Air Velocity
12 m/s
Max. Duct Pressure
±1500 Pa
Temperature Range
-20°C to +70°C (Damper body)
Installation & Control
Optimal Mounting
Install with blade axis horizontal for lowest torque, least wear, and best performance.
Flange Connection
30 mm flange for secure bolting to standard rectangular duct flanges.
Actuator Space
Requires 250 mm of clearance along the main shaft axis for actuator mounting.
Control Options
Manual handle, actuator-ready, or with pre-mounted electric actuators (On/Off, modulating, fail-safe).
Use Cases
- Fire & Smoke Dampers
- Hospital Isolation & Labs
- Industrial Process Isolation
- Hazardous Area Ventilation
- Building Zoning & Shutdown
Product brochure
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