## What is a bellows globe valve?
A bellows globe valve is a type of valve that is designed to regulate flow in a pipeline by moving a disc up and down to open or close the passageway. The bellows design allows for tight shut-off when the valve is closed, making it suitable for applications where leakage is a concern. .
### Features of a bellows globe valve:
1. **Bellows**: The bellows is a flexible component that expands and contracts to accommodate the movement of the stem without allowing any leakage. It is typically made of stainless steel for durability and corrosion resistance.
2. **Globe body**: The globe body of the valve provides a straight passageway for smooth flow control. This design helps to reduce pressure drop and turbulence in the pipeline.
3. **Handwheel or actuator**: The handwheel or actuator is used to manually or automatically operate the valve. By turning the handwheel or activating the actuator, the disc inside the valve moves up or down to control the flow.
### How does a bellows globe valve work?
Step 1: To open the valve, turn the handwheel or activate the actuator to raise the disc and allow fluid to pass through the pipeline.
Step 2: To close the valve, turn the handwheel or activate the actuator in the opposite direction to lower the disc and block the passageway.
Step 3: The bellows expands and contracts with the movement of the stem, ensuring a tight seal and preventing any leakage during operation.
Step 4: The globe body design helps to control flow by smoothly guiding the fluid through the valve without causing pressure drop or turbulence.
Step 5: The bellows globe valve is commonly used in applications where tight shut-off and precise flow control are required, such as in chemical plants, refineries, and industrial processes.
In conclusion, a bellows globe valve is a versatile valve design that provides reliable flow control and tight shut-off in various industrial applications. Its bellows design ensures leak-free operation, making it a popular choice for critical processes where leakage is a concern.
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