We manufacture custom and standard air exhaust rectangular and round silencers. Duct silencers are available in various sizes, shapes, length, and models which are suitable for HVAC systems, residential, commercial and industrial application. Duct silencers are widely used for reducing fan noise in HVAC applications. Our duct silencers are known for providing maximum sound attenuation for systems with spatial limitations. We also offer an enormous assortment of Plenum boxes of unmatched quality. Our professionals are devoted to served premium quality of services to our customers and produce products as per the industrial standard. Our Terminal Boxes are fabricated with high-quality stainless steel.
Non Return Damper is designed to allow airflow in one direction. The frame is of high quality extruded aluminum profiled construction with the advantages of corrosion resistance and rigidity. Air operated damper blades are fixed to the frame by self-oiling nylon bushes aluminum pipes. Blades are sealed with foam gasket at the bottom to avoid rattling noise and to provide airtight operation. Blades open full or to any angle depending on the air velocity. Blades stay in the position of opening without fluctuating when there is constant air flow. Blades close quietly when the air flow stops, Designed to maintain a constant pressure level inside pressurized rooms by relieving excess air when it exceeds the desired limit. Generally installed on the diesel generator, plant rooms ventilation system and exhaust ducting.
All corners of the frame are fully welded (and painted to prevent rust) to ensure sturdy construction for a rattle free operation.Designed for parallel blade operation. AMFSD series combination Fire/Smoke dampers are UL 555/555S classified, manufactured under Airmaster''s strict quality control procedures.AMFSD Dampers are available with Class II . Suitable for most of the commercial smoke management applications in both static and dynamic systems.All actuators are externally mounted as standard. Actuators are supplied without auxiliary switch as standard. Actuator position will be based on Clockwise (CW) closure direction as standard.TRD''s have an inbuilt RESET switch to reopen the damper.All AMFSD models are factory as standard dampers and TRD''s are factory tested to ensure smooth operation before dispatch. Actuators have to be configured with control panel or BMS system for smoke control applications before commissioning. Can be used in walls/partitions as per NFPA 90-A in accordance with ANSI/UL555 standardsBrand Name HESMaterial MS, Aluminium, SS And GIColor BARE METALLIC