High-pressure valves are critical components in pipeline systems, designed to control the flow direction, pressure, and flow rate of media under high-pressure conditions (typically exceeding 20 MPa). Below are the primary types of high-pressure valves, each with specific functions and advantages:
1. Globe Valve
Function: Primarily used to shut off or regulate media flow in pipelines.
Features:
Simple structure with excellent sealing performance.
Suitable for small-to-medium-sized pipe systems.
Operated manually, but can be equipped with electric or pneumatic actuators for automation.
2. Safety Valve
Function: Protects equipment and pipelines by automatically releasing excess pressure when system pressure exceeds a set limit.
Features:
High sensitivity and reliable operation.
Widely used in boilers, pressure vessels, and other high-pressure systems.
3. Gate Valve
Function: Ideal for large-diameter pipelines, enabling full open/close flow control.
Features:
Gate moves vertically along the pipeline centerline.
Low flow resistance and small operating torque.
Suitable for water, steam, and oil pipelines.
4. Check Valve (Non-Return Valve)
Function: Prevents media backflow by automatically closing when flow reverses.
Features:
Simple structure and fast response.
Commonly used in water supply, chemical, and power plants.
5. Butterfly Valve
Function: Enables quick on/off and flow regulation via a 90° rotating disc.
Features:
Compact, lightweight, and easy to operate.
Good sealing and flow capacity, suitable for frequent operation.
Handles various media (e.g., water, gas, chemicals).
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