Pneumatic butterfly valve is widely applied to medium temperature of 550 ℃ than, metallurgy, electric power, petroleum, chemical industry, air, gas and water supply and drainage, etc, flammable gas corrosive medium in pipelines. Pneumatic adjust butterfly valve is with high precision by pneumatic actuators with high performance sealing butterfly valve body composition. Pneumatic butterfly valve with simple and compact structure adjustment, processing is convenient, easy made into large diameter, have since cleaning effect, the resistance coefficient little, and distribution capacity. And with the valve locator, input control signal (4-20 mADC) and 0.4 0.7 MPa air can control operation. Pneumatic butterfly valve is applicable to adjust suspended grain fluid and strong, muddy paste shape fluid the adjustment. Clean medium can choose the valve plate and soft seal (rubber ring, four fluorine circle) to reduce leakage (can reach zero leak), high temperature and high pressure condition can choose three partial their hearts sealing body. Pneumatic adjust butterfly valve is automatic control system of the flow adjustment and block fluid of the best device. Product features: (1) simple, small volume, light weight, small flow resistance, flow coefficient, sealed performance is good. Adjusting range. Is the automation control system of the instrument execution unit. (2) intelligent pneumatic control by electric-air valve locator to electrical signals and compressed air is the power, accept control system of the input of 4-20 mA DC current signal, the regulator will be compressed air, convert air pressure signal input/output, change the valve plate rotation Angle (0-90 ° arbitrary Angle), and has good adjustment control flow parameters. (3) the pneumatic actuators the piston cylinder and song arm conversion structure, the output torque, the volume of small, adopt the whole sealing waterproof design protection grade high. The cylinder block the cylinder lens face, no oil lubrication, friction coefficient little, corrosion resistance, with super durability and reliability. All transmission bearing is using the boundary lubrication oil lubrication no bearing, ensure the drive shaft not worse.
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