Product Description
The manual rectangular duct damper is a precision-engineered component designed for HVAC systems, made from high-quality cold-rolled steel for rugged construction. This material has a tensile strength of up to 550 MPa, ensuring durability and resistance to stress deformation. The damper is manufactured using advanced processes such as precision cutting, forming, and welding to ensure a tight seal and smooth operation. It works by manually adjusting the blade angle to control airflow, providing precise adjustment with approximately 5 Nm of torque.
Product Pictures
Product Advantages
01
Seamless Welding
One of the significant advantages of a seamlessly welded manual rectangular duct damper is its ability to more precisely control airflow within a duct system. Seamless welded construction ensures there are no gaps or weak points in the baffle structure that could interfere with the smooth flow of air. These baffles often feature adjustable blades that can be set into a variety of positions. In commercial HVAC (heating, ventilation, and air conditioning) systems, the airflow rate can be adjusted within a relatively narrow range by adjusting the baffle vanes. In a well-calibrated system with seamlessly welded baffles, airflow adjustment accuracy can be achieved to ±3% of the required flow rate, an improvement over traditional spot welding, which has an accuracy of approximately ±5% of the required flow rate. This enhanced level of accuracy allows conditioned air to be efficiently distributed to different areas of the building, ensuring each area receives the appropriate amount of heating or cooling. It helps prevent over- or under-ventilation of specific areas, maintaining a consistent and comfortable indoor environment.
02
Superior Air Tightness
Manual rectangular duct damper adopts the excellent forming process of laser cutting and precision bending technology, which improves air tightness by about 15% compared with traditional methods. Smooth joints further enhance air tightness, which is 20% higher than rough joints, and maintain integrity under pressure, and the air tightness of this manual rectangular duct damper can reach 99%.
03
Durability
The manual rectangular duct damper is crafted from strong materials such as cold rolled steel, which has high strength properties with a tensile strength of 400 to 550 MPa (Megapascals). In addition, it has high toughness, with a yield strength typically between 250 and 350 MPa, ensuring its ability to resist deformation under stress. When it comes to corrosion resistance, cold-rolled steel is often galvanized or otherwise surface-treated to enhance its to rust and corrosion significantly. Galvanized steel's corrosion resistance is comparable to stainless steel in some environments, with corrosion rates as low as 0.1 mm/year under mild conditions, providing long-term durability. These superior material properties enable manual rectangular dampers made of cold-rolled steel to withstand extreme climatic conditions and the rigors of daily use, such as high temperatures, moisture, and vibration, without being easily deformed or damaged. Therefore, a well-maintained manual rectangular duct damper can last 20 years or more.
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