Pneumatic cut-off butterfly valve overview: Pneumatic cut-off butterfly valve is a newly developed long-life energy-saving butterfly valve. Butterfly valve design using three-dimensional eccentric principle, flexible seal and multi-level seal flexible processing compatible with the new technology so that the butterfly valve seal in the operation of reliable, gas seal can be leak-free, eccentric design to extend the service life of the valve. Pneumatic actuators using crank-conversion structure, with a large output torque, small size, stable and reliable performance characteristics. With the use of valve positioner or solenoid valve can be used to achieve proportional control or switch control, suitable for gas, solid particles and liquids and other media. Can be widely used in papermaking, petrochemical, chemical, metallurgy, electric power, environmental protection oil, light industry, building automation and other industrial automation control system. Pneumatic cut off butterfly valve installation and maintenance: 1, the installation of butterfly valve, the valve should pay attention to the flow direction signs, to avoid the wrong direction of circulation, the impact of the use. 2, the butterfly valve should be confirmed before using the valve under the premise of the pipeline to break through washing, so as to avoid welding slag and other debris scratched sealing surface. 3, the butterfly valve are generally set by-pass pipeline, in the repair or replacement of the butterfly valve, bypass flow can be used as usual. 4, pneumatic butterfly valve can be mounted horizontally in the horizontal 180 °, do not flip down the pneumatic actuator. 5, locator or solenoid valve debugging see the instructions. 6, pneumatic actuator crank for the square head structure, used as a manual device to use, failure to remove the gas source pipe directly to the manual wrench to achieve manual operation. 7, if found stuffing box leakage during use, tighten the gland bolts can be solved.
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