square Manual flashboard valve is adopted High quality carbon steel , it is widely used in Metallurgy, carbon, chemical industry, building materials, etc.it is mainly used for flue gas tempering, Switching function for  flue gas cleaning system.

It is also named Manual spiral gate valves.it is with durable, small flow resistance, small volume, light weight, convenient maintenance, the sealing structure of manual flashboard valve can be divided into soft seal and har seal.

Manual flashboard valve can be divided into Manual flashboard valve, pneumatic valve, electric flashboard valveand  electric hydraulic flashboard valve。We can cuntomize to meet all your requirements.