Inside Out: Mastering Globe Valves with an Exploded View

 

Table of Contents

• Introduction
• Variation Type of Globe Valves
• Globe Valves Exploded View
• Globe Valve Working Principle Animation

What is a Globe Valve

A globe valve is a type of linear motion valve used to regulate fluid flow in a pipeline. It consists of a movable disk (the plug) that is connected to a stem, which is operated manually or through an actuator. The plug is positioned perpendicular to the flow path when the valve is closed and parallel to the flow path when the valve is fully open.

Globe valves are commonly used in applications where throttling or regulating flow is required, as they provide precise control over flow rate. They are also suitable for applications that require tight shut-off, as the sealing surfaces between the plug and the valve seat provide excellent sealing characteristics.

These valves are widely used in industries such as oil and gas, petrochemical, power generation, and water treatment, among others, due to their versatility and reliability.

Variation type of Globe Valve

Globe valves come in various designs tailored to specific applications. Here are some common types:

1: Straight Pattern Globe Valve: Also known as the "Y" pattern globe valve, it has a linear flow path, offering minimal pressure drop, and is suitable for high-pressure applications.


2: Angle Pattern Globe Valve: In this type, the inlet and outlet are at an angle to each other, allowing for easier installation in tight spaces or where flow direction changes are needed.


3: T-pattern Globe Valve: This valve has a T-shaped flow path, providing a more balanced flow and reduced pressure drop compared to straight pattern globe valves. It's often used in applications with moderate pressures.


4: Bellows-sealed Globe Valve: Designed with a bellows seal around the stem, these valves prevent leakage of hazardous or corrosive fluids, making them ideal for critical applications.


5: Cryogenic Globe Valve: Engineered to withstand extremely low temperatures, these valves are used in cryogenic applications such as liquefied natural gas (LNG) handling.


6: Control Globe Valve: Equipped with special features like pneumatic or electric actuators, these valves are used for precise flow control in industrial processes.


7: Pressure-seal Globe Valve: Constructed with a pressure-sealed bonnet, these valves are suitable for high-pressure and high-temperature applications, such as power plants and refinery processes.

Each type of globe valve has its unique advantages and is chosen based on factors like pressure, temperature, flow rate, and the specific requirements of the application.

Globe Valve Exploded View

Globe Valve Working Principle