Main features:

• Dust butterfly valve is composed of two high pressure press die casting half bodies, half body is aluminum alloy material.
• Rotating disc is made of polymer composite and pre-stressed elastomer seals. It also has a top flange and a flanged part , it is suitable for connecting a flexible sleeve.
• Same round flange for top and bottom. Butterfly valves can be used for the treatment of all powder and granular materials, the valve close and pneumatic transport dry materials by using material own gravity.
• Can be installed under hoppers, bins, silos, spirals or other types of conveyors and connected to pneumatic conveying pipes.
Main parameters:














Zhengzhou chaofan valves and control Co.,ltd., founded in 2007, which is a technology industrial limited company with registered capital up to 50 million RMB, is professional in the design, production, and sales of valves, pneumatic actuators and instrument valves.
The company is located in valve industrial park, gaoshan town, xingyang city, henan province, China, its floor area more than 26668 M2 and buliding area more than 20000 M2. There are 6 professional valve engineers with bachelor degree above,11 technicists with college specialized schools, and more than 160 emplyees. There are quality control department, research department, personal department, management, stock department, financial department, independent group of the general manager. Automatic control valve is widely used in petroleum, food, chemical,oil refining, papermaking, steel, thermal power plant, shipbuilding, waster water treatment, waste gas recovery and other industrial automatic control pipeline, Instrument valve is widely used in petroleum, chemical, nature gas, thermal power, nuclear power, papermaking, food, semiconductor,TFT,LNG and other instrument valve control pipeline.
In 1991, the company passed ISO9001 international quality management system certification and obtained the import an export qualification of foreign trade.
In 1995, it was awarded "enterprise civilized unit"by henan provincial government and "henan consumer quality assured brand".
On the 10^th anniversary of the company's establishment in 2000, we invited people from all walks of life to hold a large scale seminar on "automatic control valve"in zhengzhou.
Since 2016,the company has obtained ten national design patent certifcates.
In 2009, the company was rated as one of the top ten"excellent units"by "henan yudong chamber of commerce".
In 2016, the company registered brand trademark"zhengchao"was selected as  the famous trademark of henan province.
The company make chaofan people with "humanistic, scientific, spirit , modern concept, harmonious development". At the same time,the chaofan people has won the praise of new and old customers with the superior, high quality after-sales service, reasonable price, accurate delivery time, win-win business philosophy.