Severe Service Control Valves: The Basics

What are Severe service Control valves?

Severe service Control valves are commonly identified by the applications in which they are used — applications may alter a valve’s ability to meet its acceptable levels of performance.

If you use a valve that isn’t strong enough to do the job in these applications, you will no doubt end up spending more time and money on repairs than you’d like, as well as losing valuable production time. You may also be putting your plant, equipment, and personnel at serious risk if the valve doesn’t function correctly.

Most Control valves are designed for general service, but there are times when using severe service valves is the better option. These Control valves are meant for the most severe conditions, making them necessary pieces of hardware when they’re needed. This means that you can expect these highly engineered valves to be designed to handle harsher conditions, so they’re perfect for applications where reliability and performance are key.

If you’re not sure whether your application falls into the severe service category, a guide can help you make the right decision.

MASCOT High Rangeability Trims

What types of Severe Service Control valves are there?

Severe service valves are designed to operate in conditions that would normally damage or destroy other types of valves. They’re made to withstand severe temperatures and pressures. They can also withstand abrasions, making them ideal for use in high-demand applications.

  • Cavitation Service Valves CAVFLO
  • Noise Attenuation MEGAFLO Trim
  • Multi-stage High Pressure Drops VC Trim
  • Low-Flow TAPERFLO Trim
  • Erosive Applications Trims
  • High Rangeability Trims

What are some applications requiring Severe service Control valves?

Whether or not Control valves are considered severe service depends on their application. Here are some examples of conditions requiring Severe service Control valves:

  • Very high pressure or high pressure drops.
  • Very high or very low temperatures
  • Flashing gas, which can cause erosion damage.
  • Depressurisation, which can cause a sudden increase in flow volume.
  • Corrosive environments
  • Contaminated media
  • High vibration

Let’s take a look at a few key scenarios where your operations would call for severe service control valves.

MASCOT High Pressure Forged Valve Body

Abrasive or Corrosive Applications

If you’re working with fluids or gases that are corrosive or abrasive, you’ll typically need to use severe service Control valves. You could consider this to be a time you need to start preparing with the proper tools. These types of applications may call for pressures and other conditions that are consistently fluctuating.

Extreme Temperatures

Any fluids or gases that’re at extremely high or low temperatures, may call for these valves. to be used as well. These types of valves are usually able to withstand temperatures going as high as 650 degrees Celsius (1200 degrees Fahrenheit).

They can handle applications with temperatures as low as -240 degrees Celsius (-400 degrees Fahrenheit). These valves are also designed to do this without leaking. This makes them great options for ensuring the integrity of their seal.

Exposure to High Pressures

Pressure is another important factor consider. If any fluids are under high pressure, this would call for severe service components being used. If you have operations that consist of significantly controlled directions a bulk material valve would be the option to get the job done.

Anything that consists of highly pressurized fluids would be an appropriate scenario where these should be used. There are multiple scenarios when it would be appropriate to use severe service valves. Whether there’s contaminated fluid, high levels of vibrations, or multi-flow gases, all of these environments could call for the need for them.

Is severe service the same as critical service?

Though the two terms often go together, they aren’t the same thing.

Severe service refers to the challenges levied on the valve itself, such as very high pressures and temperatures.

Critical service refers to the potential consequences of the valve not working properly. For example, nuclear service is a critical service application because a bad actor can lead to serious environmental damage or safety risks.

What are the benefits of using Severe service Control valves?

Severe service Control valves helps improve the overall performance of your Process & Piping systems. They can also help to reduce wear and tear on process Equipment, and your piping system components, which can prolong the life of your system. This is also a great benefit if your plant wants ways to save money while using high-quality parts.

These valves are great ways to help to prevent or mitigate damage from corrosion, erosion, or other forms of degradation. Severe service Control valves can also provide superior flow control compared to other types of valves. This can improve the efficiency of your system. These are only a few of the various benefits of using these components. They are versatile enough to be used within any engineering application as well.

How do you choose a Control valve for Severe service?

Choosing a Severe service Control valve will come down to its application in your system. You will know if you need one if your plant meets the above criteria. However, MASCOT engineers can help you with the best solution including custom or complex questions.

MASCOT Industrial engineers have1oo years of combined experience in providing high quality equipment to the Global Continuous Process Control Industry. Our core products and services include control valves, choke valves, actuated and commodity valves, and associated equipment for both standard and severe service applications.

MASCOT’s Engineering & Manufacturing expertise allows us to provide tailored solutions to our customers’ needs with timeliness and accuracy no matter the process. We aim to exceed our expectations with Better Value highly engineered products, faster delivery (-times) on any process, offering support from first contact through to after-sales and beyond.

For more information about our services, please call us at +61 3 9608 6400 or get in touch via

You may also like related articles such as Choke valve basics: types, applications, and parts

Have a project in mind?