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Key Materials Used in Instrument Valves for Harsh Environments in Vietnam
July 28, 2025 0 Comments uncategorized
Instrumentation valves possess the unique ability to control the flow of liquids and gases with precision, safety, and effectiveness. These valves serve as a crucial component of all modern industrial applications and processes. Arcellor Controls specializes in the production of premium instrumentation valves for various industries in India and worldwide. On the basis of our expertise, we have created this guide, which will help you assess instrument valve materials in the harsh environment of Vietnam industries. We will also discuss the use and importance of instrumentation valves and how they maximize system efficiency, improve safety, and assure effective functioning.

What Are Instrumentation Valves?

Instrumental valves are precision-engineered so that they can separate, manage, or monitor the flow of gases or liquids in the pipelines. They have an application in various important industrial sectors. Some of these industries are chemical processing, oil and gas, and pharmaceuticals. These valves preserve the system’s integrity and security.

What are the top 10 types of instrumentation valves? 

  • Ball Valves

The valves regulate the flow of fluids in the pipeline through a revolving ball and a bore. They are renowned for their tight shut-off and rapid on/off action.  

  • Needle Valves

These valves have a thin, pointed needle that controls the flow in a constrained space. The needle valves are specifically created to ensure exact flow control.  

  • Check Valves

The main function of these valves is to let the direction of the flow of liquid take place in one direction. This avoids backflow and also shields the machinery from malfunction and damage.  

  • Gate Valves

The most important feature of this valve is that it has a sliding gate that travels in a perpendicular direction to the flow. Engineers use them for on/off control.  

  • Global Valves

The design of this valve is made to provide a throttle flow, which provides good control over a variety of flow rates. This valve has a disc that travels perpendicularly to the flow channel.  

  • Butterfly valves

The butterfly valves regulate the flow of liquid through a revolving disc. They work in an effective manner with larger pipes because they have a compact size and a lighter weight.   

  • Diaphragm Valves

The diaphragm valves are an appropriate valve to manage slurries and viscous fluids. This is because they open and close the flow passage and use a flexible diaphragm.   

  • Plug Valves

These valves regulate the flow of liquid through a revolving plug with a bore. Technicians of various industries integrate them in high-pressure applications because they provide fast on/off control.  

  • Pinch Valves

The pinch valves regulate the flow of liquids and gases through the employment of a flexible and compressed tube. They are perfect for working with abrasive fluids and slurries.   

  • Pressure relief valves

These valves avoid damage or dangers by automatically removing excess pressure from the system.  

How Do Instrumentation Valves Work?

Instrumentation valves are sophisticated devices that are used in a variety of industrial operations to regulate the flow of liquids and gases. This is a brief explanation of their way of operation:  

  • Valve body

The body of the valve is a structural foundation that stores the interior parts within it. Instrumentation valve manufacturers use materials like stainless steel or brass to produce them because these materials have a high durability and corrosion resistance quotient.  

  • Valve Stem 

There is a movable part in the body that regulates the fluid flow. This part is called a valve stem. Its main use is to open or close the valve, and technicians can lift or turn it easily.  

  • Valve Plug or Disc

This component stops or enables the passage of fluid. They have the shape of a ball or disc.   

  • Valve Seat

The seat is a carefully machined surface that has the main goal of stopping leaks.     

  • Actuator 

This is an optional component in the instrument valve. The valve manufacturer may add a pneumatic or electric actuator to automate the valve’s operation.  

How harsh are the conditions of the Vietnam industry for instrumentation valves? 

The industrial settings and environment of Vietnam industries are very challenging because of a combination of operational, process, and environmental variables. These are some of the factors that make the situation harsh:   

  • Corrosive coastal environment

The chances of metal component corrosion accelerate in the coastal regions because of the excessive moisture and salinity in the atmosphere. Harsh marine conditions are common. Da Nang, Hai Phong, and Vũng Tàu are coastal cities, and the industries set up in them face such situations.   

  • Industrial procedures at high temperatures

The chemical industry,  thermal power plants, and refineries run various processes and applications at high temperatures. Therefore, the valve has to tolerate the heat fatigue and thermal expansion.  

  • Constantly exposed to chemicals

Instrumental valves are subject to volatile chemicals, acids, and alkalis in petrochemical, fertilizer, and chemical industrial facilities. Therefore, a material like Hastelloy is necessary to ensure a high repellence to such chemicals.  

  • Pressure extremes

The valves have to tolerate high or varying pressures. They also face compressed gas systems and steam lines. Therefore, the valves have to be designed with sturdy materials like Duplex or Monel to reduce the chances of leakage or mechanical failure.   

  • Slurry and particulate media

The medium of fluids usually contains a number of abrasive solids in processing units of cement, mining, or paper and pulp. As a result of this, the valve seats and their internal parts may experience erosion.  

  • Monsoon and flooding risks

Flooding from strong seasonal rains is common in Vietnam. This can particularly affect the low-lying plants and might raise the danger of water intrusion, which can corrode the instrumentation valve. So the material of the valve should be highly resistant to corrosion.  

Which are the High-Performance Materials used for Instrument Valves in Adverse Vietnamese Settings?

Manufacturers use a wide range of materials to produce instrumentation valves. They select the material on the basis of the qualities that they offer and the customer’s requirements for the level of robustness and resilience to heat, corrosion, and pressure requirements. Stainless steel, brass, and different plastics are common materials that industries choose.  Materials for Valve Bodies

  • Stainless Steel

It is ideal for a variety of applications where the conditions are hazardous or there is a presence of corrosive fluids because it can withstand rust well. The common stainless steel grades are 304, 316, and duplex, and they differ in terms of strength and resistance.   

  • Brass

This is an affordable choice that engineers frequently utilize in smaller valves or less demanding corrosive environments.  

  • Cast iron

This is a cost-effective application that requires little pressure.  

  • Polymers

Sometimes polymers such as PVC may be used in applications where cost is a concern or where the oxidation resistance is crucial.

Materials for Valve Internal Components (Trim):

 

  • Valve Stem 

The valve stems are made out of stainless steel or other materials that are resistant to corrosion.  

  • Valve seat

These valve seats are usually machined in a precise manner to create a tight seal. It is frequently made of the same material as the valve body or a comparable material.   

  • Gaskets and seals

They are usually composed of rubber or PTFE. These elastomers are a top choice because they have excellent fluid compatibility and are capable of sealing perfectly.  

What are the aspects that you should take into account when selecting a material? 

1. Corrosion resistance

Special alloys or stainless steel are the best when you want to apply the instrumentation valve in applications that have corrosive fluids.  

2. High pressure and temperature

If the industry has high-pressure and extreme temperature conditions, then you might need carbon steel, stainless steel, or exotic alloys  

3. Cost

If you are looking for a budget-friendly option in an industrial application that has less demanding corrosive, pressure, and thermal requirements, brass can be a good option.   

Conclusion

Instrumentation valves in Vietnam have to handle the highly unpredictable environment and withstand high salinity, humidity, chemical aggression, pressure swings, heat, and degradation. Therefore, the material choice is very important to ensure longevity and consistent performance. PTFE, Inconel, Duplex, Monel, and stainless steel 316L are some of the ideal materials in the Vietnam industries. They are high-temperature valve materials and chemical‑resistant valve components.    Arcellor Controls is a well-recognized manufacturer of instrument valves all over the world. We supply instrument valve materials specially for harsh Vietnam conditions. You can buy products with duplex valve materials and corrosion-resistant valve materials for Vietnam  Environment. We also have Super duplex instrumentation valves and valves with PTFE seal valve materials. 
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