Ningbo Pneumatic butterfly valve supply - Ningbo Pneumatic butterfly valve manufacturer - Ningbo Pneumatic butterfly valve manufacturers 
 A. Pneumatic butterfly valve operating torque is the torque rotating the valve operating torque one of the smallest of all valves open and close rapidly, compressed air-powered piston rack gear mechanical transmission stem to the rotary output board 0 ~ 90o, you can quickly open and close action, simple structure, small size, light weight, small flow resistance, flow coefficient, good sealing performance. The adjustment range. Execution units of the instrument in the automated control system; 

 Two. Pneumatic butterfly valve with electric - pneumatic valve positioner, the control system input 0-10mA signals and compressed air as the driving force? DC or 4-20mA? DC current signal converted to gas from the compressed air regulator The source of the pressure signal input and output, change the angle of rotation of the valve plate (0-90o at any angle), to better adjust the flow control parameters. 
 3. Pneumatic butterfly valve using a solenoid valve, the valve position back to the hearing, AC220V or DC24V power supply voltage and compressed air power, to achieve a quick two off the control of the fluid medium. 
 4. GT type pneumatic butterfly valves, AT or AW pneumatic actuator piston cylinder and crank conversion structure, the output torque, fine small volume, the use of fully sealed waterproof design high level of protection. Cylinder block with mirror cylinder, oil-free, the coefficient of friction, corrosion resistance, superior durability and reliability. All transmission bearings are used to border the oil-free, self-lubricating bearings ensure that the drive shaft friction loss. 
 The official address http://www.shxhfm.com