A zone damper (also known as a Volume Control Damper or VCD) is a specific type of damper used to control the flow of air in an HVACheating or cooling system. In large commercial installations, vacuum or compressed air may be used instead. Ducting. The links are attached to the damper such that the dampers can be released manually for testing purposes. The Opposed Blade Dampers are used to carry out a rough air system balance with closer control being carried out at the individual grilles or diffuser. For example, in a house, the main floor may be served by one heating zone while the upstairs bedrooms are served by another. The damper is provided with an access door in the adjacent ductworks for the purpose of inspection and resetting in the event of closure. Like the second style of electrical zone damper, these dampers may allow adjustment of the "closed" position. Volume Control damper is widely used in heating, ventilation and air-conditioning applications (HVAC Damper) in order to maintain or control the air volume inside the duct. Zone dampers as used in home HVAC systems are usually electrically powered. Manual dampers are turned by a handle on the outside of a duct. Our range of volume control dampers are designed to balance and control air flow through the ducts, walls and floors. Maximum size single module: 900 X 1500 mm. Defrosting Heater. When subjected to heat, these links fracture and allow the damper to close under the influence of the integral closing spring. Products. Read more. Clean Room Technology. For more friendly and professional advice on our volume control dampers, please get in touch via our contact us page or give us a call on 01842 765657. Volume Control Dampers can be manufactured with galvanized steel, stainless steel and aluminum. Another style of electrically powered damper uses a spring-return mechanism and a shaded-pole synchronous motor. OLS Balancing/Motorized dampers are constructed of precision-formed parts so that a high standard of quality for the finished product can be achieved. Accessories. Register/Grilles. Active Filters: Clear Filters. Recommend this page by sending a … The dampers may also support positions other than fully open or fully closed and are usually capable of reporting their current position and, often, the temperature and volume of the air flowing past the smart damper. In normal circumstances, these dampers are held open by means of fusible links. Tour de Competence Competence - exciting staged. Volume Control Dampers can be manufactured with galvanized steel, stainless steel and aluminum and are suitable for the systems requiring air control. Read more. In this way, applying power to the "open damper" terminal causes the motor to run until the damper is open while applying power at the "close damper" terminal causes the motor to run until the damper is closed. These dampers facilitate the air flow to each zone and each room to be controlled during testing & commissioning. Fire Protection. Location: Keywords: Search . Volume Control Damper No.1; Volume Control Damper No.2; Volume Control Damper No.3; Heaters. In either case, the motor is usually connected to the damper via a mechanical coupling. VCD are used to control the amount of air flowing through ventilation duct systems. Innovative. Automatic dampers are used to regulate airflow constantly and are operated by electric or pneumatic motors, in turn controlled by a thermostat or building automation system. Singapore 629034, Air Distribution Equipment: Recommend this page. PRODUCT DESCRIPTION. This is usually done in the summer, but also sometimes in the winter between uses. Volume control dampers; Categories & Filters. 1,390 volume control damper products are offered for sale by suppliers on Alibaba.com, of which hvac systems & parts accounts for 39%, valves accounts for 1%. Each approach has advantages and disadvantages. These dampers also may allow adjustment of the "closed" position so that they only obstruct, for example, 75% of the air flow when closed. team.ade@connols-air.com, Variable Air Volume: With its opposed blade operation closing system, volume control damper (VCD) is designed for controlling air flow and pressure in HVAC systems. Air Dampers – Perfect for a Wide Variety of Applications At Johnson Controls, we offer Damper Controls in a diverse range of models. Type JS-B read more. For vacuum-operated or pneumatically operated zone dampers, the thermostat usually switches the pressure or vacuum on or off, causing a spring-loaded rubber diaphragm to move and actuate the damper. 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