The main control valve product names of China Control Valve Network include:Electronic type electric signle seat, sleeve control valve,Electronic type electric staight signle, double seat control valve,Electronic type electric Tee confluence, shunt control valve,Explosion-proof stroke switch Fluorine lined plastic pneumatic bellows control valve,High pressure signle seat control valve,Intelligent electric sleeve control valve

1. Improving Precision and Speed

Valve Positioner: This is the "brain" of the assembly. It ensures the valve stem moves to the exact position dictated by the controller, overcoming friction and high-pressure differentials.

Pneumatic Relay (Volume Booster): To reduce transmission time lag in large-volume actuators or long-distance lines, pneumatic relays accelerate the actuator's response speed by increasing airflow.

2. Safety and Fail-Safe Mechanisms

Solenoid Valve: Used for on/off control or emergency interlocks. In the event of a power failure, the solenoid valve redirects air to move the control valve to a pre-defined fail-safe position.

Pneumatic Lock-up Valve: If the air supply fails, this device "locks" the air pressure within the actuator, maintaining the valve at its last position to prevent process upsets.

Air Storage Tank: For springless piston actuators, an air tank provides a dedicated emergency air reserve to drive the valve to a safe position during a main air supply failure.

3. Monitoring and Manual Override

Limit Switch (Valve Position Switch): These sensors provide remote feedback to the control room, indicating whether the valve has reached its fully open or fully closed stroke limits.

Handwheel Mechanism: A critical manual override tool. If the automated controller or air supply fails, the handwheel allows operators to manually adjust the valve to maintain production.

4. Air Supply Management

Air Filter Regulator: The foundation of any pneumatic system. It purifies the incoming compressed air by removing moisture and debris while regulating the pressure to a stable, consistent value.

Conclusion: Why Accessories Matter

The strategic selection of control valve accessories transforms a basic valve into a robust control element. By integrating these devices, engineers can achieve a more reliable, precise, and fail-safe automation system, ultimately reducing maintenance costs and improving plant uptime.

Do you still need to know or purchase the following control valve products:

• Self-reliance flow regulator
• self-reliance micro-pressure regulator
• Self-reliance pressure differential regulator
• Self-reliance pressure regulator
• Self-reliance temperature regulator
• Siemens valve locator

2026-01-22

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