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Round Commercial Control Dampers

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Lau’s round, low leakage control dampers were developed in response to industry requirements for a low leakage butterfly damper, which easily installs in round spiral duct work.  The specially designed blade-to-frame polyethylene foam seal is sandwiched between two round blades and fully encompasses the blade edge.  It can be optionally furnished with a variety of manual, pneumatic, or electric actuators (fail-safe spring return or double action).  

CRS25 Round, Low Leakage Commercial Control Damper Catalog

Control Damper Installation Instructions

Control Damper Operating & Maintenance Instructions

Technical Information

Minimum Torque Requirements for Commercial Control Dampers