Air volume control valve body frame After 2 mm galvanized sheet cold roll forming, with carbon dioxide gas welding or soldering by the general Q235 plate processing; blades 1 mm corrugated galvanized sheet cold rolling, two-piece synthetic spot welding interpolating axes, or 2 mm G235 steel cold forming, punching chip interpolating axes or welding round shaft. Exhaust fan installed at the entrance to the damper and ventilation and air conditioning systems use either system, usually in the "normally open" state, ventilated, 150 ℃ damper, when the internal temperature reaches 280 ℃ airflow duct, the valve by temperature fusible metal fuse action automatically shut down, cutting off airflow and to prevent the spread of fire. Other products: stainless steel molded water tanks, galvanized steel molded water tanks, enamel tanks, plumbing equipment. Our attention to credibility, smoke damper, to ensure product quality, focusing on small profits, fast delivery, Jincheng dampers, and after-sales service system, a lot of new construction in recent years to provide air-conditioning equipment, from product quality and after-sales service, users have been satisfied. 150 ℃ damper, ventilation equipment Plumper (online consultation), Jincheng damper provided by Dezhou rich ventilation plant. Dezhou rich ventilation plant (www.frtfsb.com) (www.frtfsb.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. Rich ventilation equipment in leadership with the staff warmly welcome all inquiries negotiations to create rich, ventilation a better future.