RKKM Round Regulation/Adjustment Damper

RKKM Round Regulation/Adjustment Damper

The round regulation damper serves to regulate the airflow through circular ducts by means of constricting the cross section. The damper is not classified as airtight.

Product Description

Key Features & Benefits

  • Simple & Reliable

    Rugged galvanized steel construction for dependable basic airflow regulation or on/off service.

  • Flexible Actuation

    Choose from manual handle, actuator-ready, or pre-mounted electric actuators (24V/230V, On/Off or modulating).

  • For flanged ducts (EN 1205) or SPIRO ducts with a rubber lip seal.

    Ideal for shops, restaurants, banks, hotels, homes

  • Material Options

    Standard galvanized steel. Optional AISI 304 or 316L stainless steel for corrosive environments.

  • High Velocity Rating

    Suitable for systems with air velocities up to 12 m/s.

  • Fail-Safe Options

    Available with spring-return actuators that close (or open) automatically upon power loss for safety.

Technical Specifications

Diameter Range

80 mm to 630 mm

Max. Air Velocity

12 m/s

Max. Pressure

Not specified for regulation. Designed for system pressures typical in HVAC.

Leakage Class

Casing: Class ATC 3. Blade: Not airtight (for regulation only).

Operating Temperature

-20°C to +80°C (Airflow)

Actuator Supply

24V AC or 230V AC options.

Installation & Control

Connection Type

Specify: 'P' for flanged ducts or 'SL' for SPIRO duct with lip seal.

Mounting

Can be installed in any orientation (horizontal, vertical). No special axis requirement.

Electrical Connection

For motorized versions, connect power (24V/230V) and control signal (On/Off or 0-10V).

Application Note

For regulation, not for airtight isolation. Use where some leakage is acceptable.

Use Cases

Product brochure
User Manual
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