Measuring and Regulating Damper ARMS, a-collection

This damper of type IRIS is a precision device for controlling and adjusting air flow in circular ducts. Each damper is individually calibrated to provide the best measurement results. Airflow is obtained by measuring the pressure drop on the diffuser’s fixed measuring nipples and reading the corresponding airflow from the diagram.
Thanks to the central throttling of airflow in the diffuser, the air stream in the duct is even, and the noise level very low.
Can be opened 100%, so it is perfect for installation in ducts that require cleaning.
Made of galvanised sheet steel and provided with adjustment scale and adapters. Conforms to density class C.