Ventilation valve is widely used in ventilation and dust removal system for dust and gas, gas pipes, ventilation purification equipment, gas pipelines as a flow regulation and throttling. The valve is made of high quality wear-resistant materials welded together, with good wear resistance, stable and reliable, easy to operate, sensitive, small leakage rate, long life, easy installation and maintenance, especially for low dropout, large diameter, high flow occasions, it supporting the use of various combinations of actuator, a combination of different properties of the valve. Ventilation butterfly valve Features: 1, using the new form of the middle plate and short plate type structural steel welded structure design and manufacture of compact, light weight, ease of installation, low flow resistance, high turnover, avoid high temperature expansion effects, easy operation . 2, is no link, bolts, etc., reliable, long service life. You can multi-site installation, the flow of influence from the media. 3, ventilation butterfly is a non-sealed butterfly valve, widely used in the production process kinds of medium temperature materials, metallurgy, mining, electricity and other ≤300 ℃ 0.1Mpa nominal pressure on the pipeline for communication, opening and closing or adjusting medium quality . Ventilation butterfly / Butterfly Key Features: ventilation butterfly / butterfly Nominal: 0.1Mpa ventilation butterfly / butterfly Temperature: -10 ~ 300 ℃, -20 ~ 420 ℃, -30 ~ 500 ℃, ventilation butterfly / butterfly driving modes: manual, electric, pneumatic, hydraulic, electro-hydraulic ventilation butterfly / Butterfly Medium: Flue dust, air, gas and dust and gas ventilation butterfly / butterfly low leak rate: <1% of the ventilation valve / valve leak rate: Normal < 3% Botou City Friends of Mine Machinery Co., Ltd., is a screw conveyor, dust humidifier mixer, shaftless screw conveyor, screw conveyor, FU chain conveyor, bucket elevator, buried scraper conveyor , research, design, manufacture and sale of ventilation butterfly, star discharge and other equipment for the integrated enterprise. The company has a professional R & D talent and technology specialist, has rich material and human resources. Companies with customer site requirements using computer-aided drafting, and whom the selection based on customer needs, providing effective design solutions to meet customer requirements.