Introduction
Valves are bit important in various systems and industries. Its unique design provides precise throttling that is best for getting accurate flow control.
If you are not sure what is a globe valve and how you can use it? Are there any benefits of using valves? You can explore all the details in the ultimate guide for its design variation, components, applications, etc.
What Is A Globe Valve?
This is one of the control valves that help regulate and control the flow of fluids. It has a pipeline that controls the fluid flow. Globe valve got its name due it its globe-like shape. It has a spherical body that houses an internal baffle or disc.
Components of a Globe Valve
Different globe valve components help in its functioning. They are:
Body: The outer shell is made with cast steel, stainless steel, or cast iron.
Bonnet: It is the cover which includes internal parts of the valve. This will help to keep the stem in place.
Disc (Plug): Disc or plug works like a movable valve part. It controls the flow with its flat or spherical shape. This is connected to the stem to provide the desired functioning.
Stem: This is a rod-like component connecting the handwheel or actuator. Flow is controlled by turning the handwheel or actuator, which linearly raises or lowers the disc.
Seat: It is the sealing surface found between the disc and the body. The purpose of the seat is to offer a tight shut-off when the valve is fully closed.
Packing: Packing seals prevent fluid leakage along the stem.
Handwheel/Actuator: The handwheel is the manual control mechanism to operate the valve by turning it in either direction.
Body Designs of Globe Valves & Variations
Globe valves have different variants in design that are discussed in this section.
1. Angle Globe Valve
When talking about angle globe valves, they are designed with the inlet and outlet ports positioned at a right angle to each other. That is why they have an “L” or “T” shape, making them distinctive from the other valves.
Uses and Advantages
- It is used in limited-space applications to change the flow direction.
- Useful for piping systems that require a 90-degree turn in the flow direction.
- It comes with the ability to handle the changes in flow directions.
2. Y-Shaped Globe Valve
The Y-shaped globe valves have a Y-shaped body configuration. Its inlet and outlet ports align with the main flow path, which creates a smoother and less turbulent flow pattern.
Uses and Advantages
- They are used in high-pressure systems like steam applications.
- It ensures efficient fluid flow by minimizing the pressure drop.
3. Z-Shaped Globe Valve
It has a unique zigzag or “Z” shape with inlet and diagonal outlet ports. Its design creates a longer and more gradual flow path when throttling.
Uses and Advantages
- It is used for those applications that need precise control flow.
- Offers greater resistance to fluid flow
- Useful for temperature control systems
- Reduces the risk of water hammer and bears the sudden flow velocity changes.
What is the most common application of a globe valve?
Globe valves are best for various applications in different industries. The most common applications are:
HVAC Systems
They are used in ventilation, air conditioning (HVAC) systems, and heating to control hot, chilled, and steam flow. It can regulate temperature and maintain optimal conditions.
Power Generation
It plays a vital role in flow and fluid control in different instruments such as boilers, turbines, and condensers. They provide efficient operation support for power generation systems.
Oil & Gas Industry
Glove valves are used in oil and gas processing for flow control in pipelines, wellheads, and separators.
Water Treatment
In water treatment plants, globe valves are used for flow control in water distribution systems, water treatment processes, and wastewater management.
Chemical Processing
Their ability to handle various chemicals makes them ideal for these applications.
Marine Industry
Globe valves are employed in ship systems for flow control in cooling, ballast, and fuel systems.
What is the purpose of a globe valve, and what is it used for?
When it comes to globe valve uses and purposes, they have numerous things to offer. Let’s grab the details:
Flow Regulation
One of the primary functions of a globe valve is to regulate the rate of fluid flow. By adjusting the position of the disc or plug, the user can control the opening and closing of the flow passage, thereby changing the amount of fluid that passes through the valve.
Isolation and Shutoff
Globe valves are also used to isolate or shut off the flow of fluids completely. This feature is critical for maintenance, repairs, or emergencies where the flow must be stopped.
Throttling
The linear motion of the disc in a globe valve allows for gradual and controlled flow throttling. This makes globe valves suitable for applications where sudden changes in flow velocity could cause water hammer or damage to downstream equipment. Throttling is particularly important in processes that require precise adjustments to match varying conditions.
Pressure Regulation
Operators can influence the pressure downstream by adjusting the flow rate through the valve. This is crucial in systems where maintaining specific pressure levels is essential for safe and efficient operation.
Final Words
Globe valves are necessary for fluid control systems. They offer precise flow control and reliable shut-off capabilities. It provides versatility and ease of maintenance in many industries ranging from power generation to water treatment.
These valves have various designs, components, and varieties for different applications. That is why it is important to explore what your need is and what is the most suitable type for your industry. For better outcomes, you can opt the ICS because they have the best quality valves to meet your industrial needs.