Flapper valve can be divided into electric and manual valve flapper flapper valve and pneumatic flapper valve three series for unloading warehouse roof can also be used in metallurgy, chemical industry, building materials, electricity and other sectors. Flapper valve, also known as a manual knife gate valve, knife-shaped gate is a gate which is always in close contact with the valve seat seal valves, the principle is to have a diameter the size of the opening round mouth the gate, through the gate opening and closing making the gate with a round mouth diameter and made entirely out of match action. The advantage of this is that the valve body bore no recess, the media will not jam jam, and has full bore flow of properties, which can be divided into soft seal sealing structure, hard seal structure. Transmissive knife gate valve is constructed with precision, good technology, compact structure, sealing seat for design activities, anti-wear and automatic compensation function, and thus longer life. In the process of closing and opening the gate valve has been close with the movement, making the valve opening and closing force is stable, and has cut off the media and so on. Performance knife gate valve has a simple and compact structure, reasonable design, lightweight materials, sealing, reliable, light and flexible operation, small size, channel flow, flow resistance, light weight, easy to install, easy to disassemble, etc., can work pressure 1.0MPa -2.5MPa, -29-650 ℃ operating temperature under normal working conditions. Knife gate valve has cut its function, can scrape the sealing surface of the adhesive material, the debris is cleared automatically seal leakage, stainless steel gate to prevent corrosion. For more information about our products, please call 18032703752 Feedback and Machinery Manufacturing Co., Ltd. Changzhou Yingjie.