Pneumatic Bilateral Pressure Ansi Butterfly Valve

Operational Principle 

The valve primarily relies on the coordinated action of the pneumatic actuator and the butterfly valve component. The pneumatic actuator typically consists of a single-acting cylinder and a pilot solenoid valve. Upon receiving the control signal, the piston within the cylinder moves due to compressed air, driving the valve plate of the butterfly valve through a connecting rod mechanism to effectuate opening or closing. Additionally, an adjustable piston limit mechanism is equipped in the cylinder to regulate piston stroke for achieving customizable valve openings. The butterfly valve component comprises elements such as the valve body, valve plate, rotating shaft, and connecting rod which convert piston rod stroke positions into corresponding movements of the valve plate; actual opening values can be visually displayed via a pointer display device. For specialized applications like high-temperature environments, a radiator or high-temperature bracket can be added to ensure proper operation.

The initial angle of rotation for the pneumatic double position butterfly valve’s plate is 15 degrees while it reaches 75 degrees when fully opened. A pointer display indicates this opening value used for system airflow control and automatic temperature regulation. Technical parameters include nominal diameter, working pressure, control pressure, working medium, and opening range among others; specific details can be found in relevant technical documents or manufacturer-provided data tables.

In summary: The pneumatic double-position butterfly valves drive piston movement through signals from their actuators before using connecting rods to rotate their plates for precise fluid flow control by adjusting piston strokes.