Types of Industrial Valves
When it comes to selecting the right type of valve for your application, the choices can be a little bit overwhelming. For many applications, industrial valves may be exactly what you need.
With so many choices, it’s important to weigh the advantages and disadvantages of every type to ensure you are picking the best valve for your needs. In this post, we’re going to be taking a look at a few of the most common types of valves.
Let’s jump in!
Classification of Industrial Valves by Type
Industrial valves are mechanical devices used to control and regulate the flow of liquids, gases, or slurries within a system or process. They are crucial components in various industries such as oil and gas, chemical, pharmaceutical, water treatment, power generation, and manufacturing.
There are several types of industrial valves, each designed for specific applications and functions. Common types include:
These valves have a spherical closure with a hole (ball) in the center. They provide quick, quarter-turn operation and are suitable for on/off flow control.
Gate valves feature a sliding gate that opens or closes the flow path. They are commonly used in applications that require full flow or complete shut-off.
Globe valves have a globe-shaped body and a movable plug or disc for flow control. They are versatile and provide good throttling capability.
These valves consist of a disc that rotates on a shaft to control flow. They offer a compact design, low-pressure drop, and quick operation.
Check valves allow flow in one direction and prevent backflow. They are commonly used to prevent fluid reversal and maintain system integrity.
Pressure Relief Valves
These valves are designed to release excess pressure from a system. They prevent equipment damage or failure.
Common Materials Used in Industrial Valves
Industrial valves are manufactured using a variety of materials, each chosen for its specific properties and suitability for different applications. The choice of material depends on different factors:
- Type of fluid or gas being controlled
- Temperature and pressure conditions
- Corrosion resistance requirements
- Compatibility with the surrounding environment
Here are some common materials used in industrial valves:
Stainless steel is widely used in valve manufacturing due to its excellent corrosion resistance and strength. Different grades of stainless steel, such as 304, 316, or 316L, offer varying levels of corrosion resistance and temperature tolerance.
Stainless steel valves are suitable for a wide range of applications, including water, chemicals, food processing, and pharmaceuticals.
Carbon steel is a popular choice for valves due to its strength and affordability. It is suitable for applications with moderate temperature and pressure conditions, such as oil and gas, power generation, and general industrial processes.
Carbon steel valves may require additional protection, such as coatings or linings, to enhance corrosion resistance.
Cast iron valves are commonly used in applications where cost-effectiveness and durability are priorities. Cast iron offers good strength and resistance to wear and is often used in water and wastewater treatment, irrigation, and HVAC systems. But it is not suitable for corrosive environments or high-temperature applications.
Bronze valves are also suitable for marine environments and low-temperature applications. Bronze valves are valued for the following:
- Corrosion resistance
- Excellent machinability
- Low friction characteristics
Brass valves are made primarily of copper and zinc. They are widely used in the following industries:
- General industrial applications
Brass offers good corrosion resistance, easy machinability, and affordability. It may not be suitable for certain corrosive environments or high-temperature applications.
PVC (Polyvinyl Chloride)
PVC valves are predominantly used in water and wastewater applications. This valve has the following characteristics:
It also has temperature limitations and may not be suitable for high-pressure applications.
PTFE is a fluoropolymer known for its excellent chemical resistance and non-stick properties. Valves with PTFE seats or linings are used in applications involving:
- Corrosive chemicals
- High-temperature fluids
There are many alloy metals. It can be Monel, Inconel, Hastelloy, and Duplex stainless steel. They are used in valves for their superior corrosion resistance properties.
These alloys offer exceptional performance in highly corrosive environments, such as:
- Oil and gas processing
- Chemical production
- Offshore applications
Selecting the Right Valve for Your Needs
Selecting the right valve for your needs involves considering various factors to ensure it meets the specific requirements of your application. Here are some key steps to help you choose the right valve:
Identify Application Requirements
Understand the specific requirements of your application. It includes the following:
- Types of fluid or gas
- Pressure conditions
- Flow rate
- Corrosiveness or viscosity
This information will help you narrow down the options and select a valve that can handle the specific demands of your application.
Determine Valve Type
Based on your application requirements, determine the appropriate valve type that suits your needs. Common valve types include ball valves, gate valves, globe valves, butterfly valves, check valves, and control valves.
Each valve type has specific characteristics and advantages, so choose the one that aligns with your application requirements.
Consider Valve Material
Select engineered valves that are compatible with the fluid or gas being controlled and the surrounding environment. Different materials offer varying levels of corrosion resistance, temperature tolerance, and durability, such as:
- Stainless steel
- Carbon steel
- Cast iron
- Specialized alloys
Always ensure that the chosen material can withstand the conditions of your application.
Learn About Industrial Valves Today
Industrial valves provide safe and reliable control over a system’s fluids, from gas and liquids to steam and vapors. Each type of industrial valve has its own specific design, operation, and purpose.
Utilizing proper industrial valve selection and installation must be considered to ensure proper performance to support safe, productive, and cost-efficient operations. If you need more information, consult an engineer today!
Did you find this article helpful? Check out the rest of our blogs!