Ball Valve

A valve is a device that controls, directs, or regulates the flow of a fluid (gases, liquids, fluidized solids, or slurries) by opening, closing, or partially blocking passageways. We have gate valves, globe valves, diaphragm valves, pinch valves, pressure relief valves, plug valves, butterfly valves, control valves, etc. Each of these types has a number of models, each with a variety of characteristics and functional capabilities. Many valves are available, so it can be hard to decide which valve is right for your application. In this article, we discuss the advantages of ball valves over globe valves.

What is the difference between ball and globe valves?

The major difference between ball and globe valves is how they close. Ball valves have a stem and a ball that rotate horizontally and are often called rotational valves. The sphere valve, on the other hand, has a stem and plug that are linear, earning them the name “stroke” valves. Ball valves are ideal for systems where the power must be on and off without reducing pressure. Globe valves are excellent at regulating flow.

The Ball Valve: How Does It Work?

The inside of the ball valves is equipped with a ball. Ball valves are quarter-turn valves that regulate the flow through them by using a hollow, perforated, pivoting ball (called a “floating ball”). When the hole of the ball is in line with the flow, the valve is open, and when the handle is pivoting it 90 degrees, it is closed. With its flat handle that aligns with the flow when it is open and perpendicular when it is closed, the valve can be visually checked when it is open or closed.

The Globe Valve: How Does It Work?

Globe valves became the industry norm for control valves for many years. They are known for their spherical body shape, with an internal baffle that separates the two halves of their body. The valve has an opening in which a movable plug (or disc) can be screwed to close it. Globe valves with automatic actuators often have smooth stems instead of threads and are opened and closed by the actuator assembly.

Ball valves or globe valves: Which is better?

Ball valves are rugged, perform well after several cycles, and are stable, firmly closing even after long periods of inactivity. These characteristics make them an ideal alternative for shut-off applications, where they sometimes outperform gates and globe valves. In contrast, globe valves may provide the most precise throttling control when compared to ball valves.

Aira Euro Automation is the leading Valve Manufacturer in UAE. We have a huge range of ball valves and globe valves available in stock.

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