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The Sammet Disc Damper is designed to isolate dust-laden gases in pulp and cement production, metallurgical processes, and oil-fired and coal-fired power plants. These units are often used before and after electrostatic precipitators, and enable personnel to service an ESP without unnecessary stoppages. Sammet delivered its first disc dampers during the 1980s, and since then has evolved into a front-line partner for major boiler and gas cleaning system manufacturers, with hundreds of units installed in countries such as India, Portugal, Russia, Sweden, China, Finland and Indonesia. 
Meet the reliable damper giantsSammet Disc Dampers incorporate a number of unique features – many of which are patented – to provide maximum performance and reliability, safe operations, and easy maintenance.
In basic terms, a Sammet Disc Damper consists of a casing, a disc, and an actuator. Throttling is negligible when the damper is open, as the disc is raised against the wall of the valve casing. This means that pressure drops are low, and ensures efficient utilisation of damper capacity. Raising the disc in this way also protects the actuating mechanism from fouling and wear caused by dust-laden gas.
Sammet Disc Dampers occupy very little space outside ducts and can be easily incorporated into existing ducting using a simple flange connection. Standard units are available for rectangular ducts, as well as circular and custom sizes. Customers can select from electric, pneumatic, hydraulic, and manual actuator options.
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