Types of Globe Valves

All You Need to Know About Globe Valves: 

Types, Functions, and More

The world of valves can be vast and complex, but one type stands out for its versatility and reliable performance: the globe valve. If you're dealing with fluids in your industrial or plumbing projects, you've likely encountered these valves. But with so many varieties and applications, it's natural to have questions. This blog post will be your one-stop guide to understanding globe valves, from their types and functions to important considerations before buying one.

What Is A Globe Valve?

Imagine a spherical body with an internal mechanism that regulates fluid flow. That's the basic idea behind a globe valve. It gets its name from its rounded body shape. Unlike some other valves, globe valves offer a throttling function, meaning you can control the flow rate of the fluid passing through. This makes them ideal for various applications where precise flow management is crucial.

What are the different types of globe valves?

There are two main ways to categorize globe valves:

Body Design:

• Z-type (Straight Pattern): This is the most common type, with the inlet and outlet ports in a straight line.

• Y-type: Here, the inlet and outlet ports are at an angle, allowing for easier removal of debris or trapped fluids.

• Angle type: Similar to Y-type, but with a 90-degree turn between inlet and outlet, saving space.

Disc/Plug Design:

• Stop check: This type allows flow in one direction and prevents flow reversal.

• Disc type: This is the most basic design, with a disc-shaped element that regulates flow. Variations include ball type (for low pressure) and needle type (for precise flow control).

• Composite type: This combines features of different disc designs for specific applications.

What is OS & Y type globe valve?

OS & Y stands for "Outside Screw and Yoke." This design features a threaded yoke that screws the bonnet onto the body. It allows for easier bonnet removal without disturbing the internal valve parts, making maintenance simpler.

What type of port is a globe valve?

Globe valves typically have flanged or screwed connections, depending on the application and pressure rating.

What is the use of Y type globe valve?

The Y-pattern design of the Y-type globe valve allows for easier removal of any solid particles or sediment that might accumulate in the valve body. This is beneficial in applications where clean fluid flow is critical.

How Does The Globe Valve Work?

A stem connected to a handwheel or actuator controls a disc or plug inside the valve body. Rotating the handwheel moves the disc up and down, regulating the flow of the fluid. By adjusting the position of the disc, you can fully open, partially open, or completely close the valve.

Globe Valve Advantages and Disadvantages

Advantages:

• Precise flow control (throttling)

• Reliable sealing

• Suitable for various pressures and temperatures (depending on material)

Disadvantages:

• Higher pressure drop compared to some other valves (like gate valves)

• Can be more complex and expensive than some other valve types

Globe Valve Parts

• Body: The main housing of the valve.

• Bonnet: The upper part that provides access to the internal parts.

• Stem: The rod connecting the disc to the handwheel or actuator.

• Disc/Plug: The movable element that regulates flow.

• Seat: The stationary ring that the disc seals against.

• Handwheel or Actuator: The mechanism used to operate the valve manually or automatically.

Installation and Maintenance Of Globe Valves

Proper installation and maintenance are crucial for the optimal performance and longevity of your globe valve. Always follow the manufacturer's instructions for your specific valve model. In general, globe valves require proper cleaning, lubrication, and inspection based on the frequency of use and the type of fluid they handle.

What To Consider Before Buying Globe Valves

• Application: What type of fluid will the valve handle (water, steam, chemicals)?

• Pressure and Temperature Rating: Choose a valve rated for the maximum pressure and temperature of your system.

• Material: Select a material compatible with the fluid and pressure (e.g., cast iron, stainless steel).

• Port Size and Connection Type: Ensure the valve size and connection type match your piping system.

• Flow Control Requirements: Do you need precise flow control (throttling) or just on/off functionality?

By understanding the different types, functions, and selection criteria for globe valves, you can make informed decisions for your specific needs. Whether you're a seasoned plumber or an industrial engineer, this guide equips you with the knowledge 

For Buying Globe Valves

You Can Visit Our Website: https://www.unimaxvalves.com

You Can Contact Us

Mr. Khursheed Ahmad Khan

+91 7977539875 / +91 9920307161

Email

sales@unimaxvalves.com

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