Fire hydrant

Mechanical dampers shut the cross sectional area of a duct in the event of a fire either by means of pivoting a fire-resistant board (in Europe), or by means of steel shutters, similar to blinds on a window (in North America). In the European designs, the turning mechanism is fully contained, permitting the dampers (subject to type approval) to be grouted in place, which permits a heat sink effect to conduct heat from an accidental building fire, which impinges upon a duct and damper, to be conducted into surrounding structures.

Henan Shuangxin Fire Environmental Protection Equipment Manufacturing Co., Ltd is located in Shuangxin Industrial Park, Huaidu Road, Tongbai County, Nanyang City, Henan Province, China. It is a high-tech enterprise integrating design, manufacturing, R&D, production, and sales.t is China's national key anti-epidemic material guarantee enterprise, AAA grade credit enterprise, designated production enterprise by the Ministry of Public Security Fire Products Conformity Assessment Center, Henan Province Science and Technology SMEs, Henan

Province Epidemic Prevention and Control Key Guarantee Material Manufacturers, and China Fire Protection Association, China Chamber of Commerce Intellectual Property Branch, China Refrigeration Industry Alliance, Henan Construction Association, Henan Refrigeration Society, Henan Environmental Protection Federation, Henan Fire Protection Association, Zhengzhou Purification Association, Zhengzhou Construction Association, and other member units, it is Nanyang City Enterprise Technology Center, Ventilation and Water Supply Equipment Research Center recognized enterprises and won the honorary title of "Return to Entrepreneurship Excellent Enterprise" in Nanyang.

Shuangxin Company "based on the Central Plains, lays out the whole country, and faces the world". Its products are distributed in 31 provinces, municipalities, and autonomous regions across the country, and distribution centers and offices have been established in Taiyuan, Hefei, Wuhan, Xi'an, Xining, Lhasa, Lanzhou, Yinchuan, Chengdu, and other places. Shuangxin Company is qualified for self-supporting import and export trade. Some products have been exported to Australia, Russia, the United States, South Korea, Laos, Vietnam, Myanmar, Kuwait, Saudi Arabia, Serbia, Uzbekistan, Myanmar, Iran, Egypt, Mongolia, etc. Countries and regions.

During the 2019 new crown pneumonia epidemic, the purification and fire smoke exhaust products produced by Shuangxin Company successively assisted in the construction of Wuhan Huoshenshan Hospital, Wuhan Leishenshan Hospital, Wuhan Fangcai Hospital, Beijing Ditan Hospital, Tianjin Infectious Disease Hospital, etc. More than a dozen hospitals have been awarded the honorary title of "National Anti-epidemic Material Guarantee Enterprise" by the National Development and Reform Commission.