EXPLORE. For some applications, it is essential that thermal conductivity be kept at a minimum. Añadir a comparar . Smoke dampers are UL555S tested and labeled, low leak damper and actuator assemblies constructed to restrict the spread of smoke in HVAC systems that are designed to be automatically shut down in the event of a fire, or opened to control the movement of smoke within a building when the HVAC system is part of an engineered smoke control system. Greenheck’s systems and products are used in commercial, institutional and industrial buildings. GREENHECK ARTICLES . Control damper products for commercial applications. They provide a durable, practical, and inexpensive means of gaining access to damper components inside the ductwork. Find blade type, velocity, pressure, AMCA listings, submittals, drawings and more, all in one easy-to-use format. Learn More . Greenheck louvers are available in endless standard configurations. Products tested and classified in accordance with UL555C. ; Shut off damper DAS/DASL stops about 95% of air during full closing stage. Leakage: ***** Dampers shall have a maximum leakage of 3 cfm/sq. Ratings. High Wind and Hurricane - G and GB Greenheck is leading the High Wind Standard for roof top fans and ventilators. VCD-34V is a low leakage control damper with insulated vertical fabricated airfoil blades. Cantidad: Seleccionar . and 11 cfm/sq. Life Safety Dampers . LEARN MORE. Model Series: 3900 Insulated Thermal-Break Control Damper. AIR CONTROL. A backdraft damper, or isolation damper, from Grainger helps to allow airflow in one direction and prevent reverse airflow. CAUTION! This test method, which is found in American National Standards Institute (ANSI)/AMCA Standard 500D-12, assigns a damper a thermal efficiency ratio by comparing its thermal performance with the thermal performance of a standard reference damper. Hurricane winds start at 75 mph. Añadir a favoritos . Greenheck Fan Corporation. AIR MOVEMENT. Envío Gratis. 7 Actuator Mounting Options Actuators must be factory mounted. Can’t find what you’re looking for? Certified Products. Please feel free to contact our Aftermarket Support Team for further assistance. $52.02 . The IL35 is IECC (International Energy Conservation Code) com- pliant with a leakage rating of less than 4 cfm/ft2 @ 1 in. Access doors are designed for use in low to medium pressure duct systems. Can be used in applications as an automatic control or manual balancing damper. Do not use to exhaust hazardous or explosive materials and vapors. Greenheck Product # 483623. It is also AMCA-certified for pressure drop and leakage. All have a variety of accessories, blade, head and sill designs to fit your application. Shop Greenheck Backdraft Dampers Backdraft dampers (also called gravity dampers) allow airflow in one direction and prevent reverse airflow for use in exhaust or intake HVAC systems. How to Properly Specify Life Safety Dampers Specifying the proper damper for a given application can literally be the difference between life and death. Today, we design and manufacture a comprehensive line of top performing equipment and accessories that move, control and condition air. From Actuators and Enclosures to Fusible Links and Jack Shafts we offer all the replacement parts you need to keep your Greenheck dampers operating at peak performance. Each meets or exceeds the industry’s most stringent test performance standards and provide exceptional aesthetic appeal. Regulating damper DAR/DARL passes about 30% of air with a possibility of full opening of a duct. This allows a Greenheck control damper to be mounted in either direction of flow, an advantage when installing with space constraints. and can exert a force of 75 pounds per square foot of pressure—or over 900 pounds on a fan and curb. LEARN MORE. 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