Extract elements, valves

Air extract elements have an importantposition in modern central ventilation systems. Together with the fan they create the base for operation of the extractionsystem, optimised on requirements andmeeting to regulations. The extract elements must be matched to the room as well as the use. Thereforevariable air flow volumes such as trickle and general ventilation or controlling the humidity are necessary. The new generation of the innovative Heliosextract elements AE meet this need.A wide range satisfies all requirements.The elements are available with constant airflow control, trickle and general ventilationor time and humidity control.Conventional extract elements such as valves are suitable for simple commercialand industrial applications.The ETS attenuators reduce the duct’ssound transmission considerably and can be used as cross talk attenuators.