A globe valve is a type of valve used to regulate flow in a pipeline through a movable plug or disc element and a stationary ring seat that controls the fluid.

Globe valves get their name from their spherical body shape, with two halves separated by an internal baffle. This design features an opening that forms a seat, where a movable plug closes, opens, or regulates the flow. 🌐

How is it operated?

The most common actuation method consists of a threaded handwheel, which rotates around its axis to gradually open or close the valve. This mechanism moves the closure disc up or down, allowing fluid to pass through. The fluid must always exert pressure on the lower side of the disc (except in high-temperature steam services). 🔄

How does the shut-off mechanism work?

The shut-off component consists of a disc that fits precisely inside the valve cavity.

It moves up or down when the handwheel is rotated left or right, providing very precise flow regulation. 🔒

This design allows for excellent flow control with minimal seat wear, though full closure is slow, and pressure loss is significant. 💧

Tips for Selecting and Using Globe Valves

Proper globe valve selection depends on understanding its specifications and ensuring compliance with industry standards. For maximum efficiency, it’s recommended to consult organizations like the American Petroleum Institute (API), which provides industrial standards and detailed guidelines for proper valve implementation. 📚

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