Pneumatic Actuator Butterfly Valve Components
An integrated system composed of two main modules working together to achieve precise opening, closing, and sealing in pipeline systems.
Valve Body Assembly
The foundation module that connects to the pipeline and houses internal components. Designed to match pipeline specifications for smooth medium flow.
Key Components: Valve body, valve disc, valve stem, sealing elements, and bearings/bushings.
Pneumatic Actuator
Provides the power to drive the valve disc by converting compressed air energy into mechanical force.
Key Components: Actuator housing, piston/diaphragm, return spring (single-acting), and dual air inlets (double-acting).
Auxiliary Components
Enhance functionality and reliability through precise control and monitoring capabilities.
Key Components: Positioner, limit switches/sensors, and filter regulators.
Core Component Details
- Valve Body: Foundation connecting to pipeline, designed to match specifications for smooth medium flow.
- Valve Disc: Core element controlling flow; rotation adjusts flow area for regulation or shutoff.
- Valve Stem: Links disc to actuator, transmitting rotational force with sufficient strength and rigidity.
- Sealing Elements: Critical for preventing leakage; soft seals for low-pressure, hard seals for high-temperature/high-pressure environments.
- Bearings/Bushings: Reduce friction during rotation, ensuring smooth disc movement and extending service life.
- Actuator Housing: Contains pressure chambers converting compressed air into mechanical force.
- Piston/Diaphragm: Pressure-responsive components generating motion when compressed air enters.
- Return Spring: Essential for single-acting actuators; returns valve to preset state when air supply is cut off.
- Positioner: Receives control signals and adjusts actuator air pressure for precise disc positioning.
- Limit Switches/Sensors: Monitor disc position, sending feedback signals to control system.
- Filter Regulators: Remove moisture and impurities from compressed air, stabilizing pressure.
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