ZSHO and ZSRO pneumatic ball valves are a type of valve that rotates 90 ° around the axis perpendicular to the channel. They consist of a piston type double acting or single acting (spring return type) pneumatic actuator and an O-valve structure. They are equipped with accessory solenoid valves, air filter pressure reducers, limit switches (valve position feedback devices), or electric pneumatic valve positioners to achieve automatic adjustment control or two position cut-off control of fluid media in the process pipeline.

　　Characteristics of Pneumatic Cut off Ball Valve

1. Pneumatic ball valves have low fluid resistance and are the ones with the smallest fluid resistance among all valve types. They can be opened and closed quickly and conveniently, powered by compressed air. Through the mechanical transmission of piston, rack, and gear, the valve stem rotates the ball body 0-90 ° with the torque output by the angular stroke, and can quickly complete the opening and closing action or adjustment action. The core channel is flat and smooth, not easy to deposit media, and can be used for pipeline ball passing. Simple structure, light weight, and good sealing performance. It is the execution unit of instruments in the automation control system;

2. Using an electric pneumatic valve positioner, powered by electrical signals and compressed air, it receives 0-10mA DC or 4-20mA DC current signals from the control system input. The regulator converts the compressed air into air source pressure signals for input and output, and changes the rotation angle of the ball core to achieve proportional adjustment action.

3. Adopting electromagnetic directional valve and valve position feedback device, powered by AC220V or DC24V power supply voltage and compressed air, to achieve fast two position cut-off control of fluid medium.

4. The pneumatic actuator adopts a piston type cylinder and a curved arm conversion structure, with large output torque, small volume, and a fully sealed waterproof design with high protection level. The cylinder block adopts a mirror cylinder, oil-free lubrication, low friction coefficient, corrosion resistance, and has super durability and reliability. All transmission bearings adopt boundary self-lubricating bearings without oil lubrication to ensure that the transmission shaft is not worn.