Globe Valve
globe valve is a linear motion valve designed primarily to stop, start, and regulate (throttle) fluid flow using a movable disc and a stationary ring seat. Characterized by a spherical body with an internal baffle, they are ideal for applications requiring frequent operation and precise flow control, such as in cooling water, fuel oil, and boiler systems.
Key Aspects of Globe Valves
- Function: Used for throttling (reducing flow/pressure) and on/off control.
- Design: Features a globular body, generally with a tortuous internal path that causes higher pressure drops compared to gate valves.
- Operation: The disc moves perpendicular to the seat, allowing for precise, gradual flow regulation.
- Components: Main parts include the body, bonnet, stem, seat, and disc.
- Types: Common designs include T-pattern (standard), Angle type (for 90-degree turns), and Y-pattern.
- Advantages: Excellent throttling capability, good shut-off, and ease of maintenance.
Common Applications
Globe valves are used in systems requiring regulation, including
Globe valves are used in systems requiring regulation, including
Cooling water and fuel oil systems.
- Boiler, turbine, and high-pressure vents/drains.
- Chemical feed systems.
- Flow regulation in process industries
Comparison
Unlike gate valves, which are designed for fully open or closed service, globe valves are designed specifically to control flow, even though they cause more restriction.
Unlike gate valves, which are designed for fully open or closed service, globe valves are designed specifically to control flow, even though they cause more restriction.