November 08,2024
Roy

Introduction

Butterfly valves are important flow-control equipment to control the flow of liquids and gasses in any industrial work. This guide will discuss the different types of butterfly valves, with more focus on the fluorine-lined types that perform very well in corrosive environments.

From an engineer and plant manager’s perspective, it is important to know how these valves work in modern industry today.

Understanding Butterfly Valve Basics

In general, the butterfly valve consists of a housing and a disk that rotates about its center, making it possible to regulate the flow of the medium passing through it. Companies like Lianke Valve, however, geared towards modernization and competitive advantage, integrate unique elements into their products, such as fluorine lining for corrosion resistance.

Diagram of a valve with text

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Key Takeaways:

  • To operate a butterfly valve, you only have to turn the stem ninety degrees to enable or impede the passage of flow
  • Improved materials and construction enable tough valves to withstand even the harshest conditions
  • Selection in this case is very important because it helps to improve the operation and the life of the system

Types of Butterfly Valves

Fluorine-Lined Butterfly Valves

In terms of durability, Lianke Valve Company offers fluorine-lined butterfly valves that are unrivaled in the entire processing industry. These valves exhibit:

  • Temperature range capabilities: FEP (-29℃~120℃), PFA (-29℃~180℃), PTFE (-29℃~150℃)
  • Comprehensive size range: DN40~DN1200 (1-1/2”~48”)
  • Multiple pressure ratings: 1.0MPa, 1.6MPa, 150LB

Standard Configurations

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  1. Wafer-Style Butterfly Valves
  • Ideal for limited spaces due to the compact design.
  • Does its job without having to spend too many monetary resources.
  • Operates effectively under low to moderate pressure.
  1. Lug-Style Butterfly Valves
  • Increased mounting options available and can support more devices.
  • Can be used as serving devices at the end of some lines.
  • Remain steady even with increased pressure.
  1. Double-Flanged Butterfly Valves
  • Most stable and secure design.
  • It can withstand very high-pressure forces.
  • More effective seals.

Technical Standards and Specifications

Modern butterfly valves meet the requirements of international standards:

  • Design & Manufacturing: GB/T12238, API 6D
  • Flange Standards: HG/T20592, GB/T9119, ASME B16.5
  • Testing Standards: HG/T13927, JB/T9092, API 598

Advanced Features of Modern Butterfly Valves

Corrosion Resistance Technology

Among the technologies employed by Lianke Valve best are the fluorine-lined butterfly valves. The fluorine lining is such that it can withstand aggressive chemicals such as hydrochloric acid and liquid chlorine. Their usage within the valved would be appropriate in the industrial field, demanding valves that would fit to extreme working environments. This technology of lining technology works so that it acts as a line of defense between the body of the valve and corrosion-prone media, which improves the durability of the valve after multiple interactions with the vitiating surroundings.

Size and Pressure Specifications

The types of valves existing in the market are standard in different sizes to accommodate different industrial applications:

  • Standard sizes from 2″ to 48″ (DN40~DN1200)
  • Common configurations: four-inch butterfly valve, 6-inch butterfly valve, eight-inch butterfly valve
  • Pressure ratings up to 1.6MPa for demanding applications

Applications and Industry Usage

Chemical Processing

Given their properties, these valves can be effectively used in chemical processing applications where the fluorine-lined butterfly valve comes on top. Valves suffer extreme temperatures ranging from -29 degrees centigrade to 180 degrees centigrade due to the lining used. Their structure is strong enough to withstand pressure in

Water Treatment

In water treatment facilities, butterfly valves play a crucial role in flow control and isolation. The wafer-type butterfly valve and double-flanged butterfly valve configurations are particularly popular in these applications, offering:

  • Reliable sealing performance
  • Easy maintenance access
  • Cost-effective installation
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Installation and Maintenance Guidelines

Installation Best Practices

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To ensure the correct installation of butterfly valves, the following guidelines should be adhered to:

  1. Alignment verification
  2. Specified amount of torque
  3. The surfaces of the flanges
  4. Seal inspection

Maintenance Requirements

Proper maintenance can go a long way in ensuring that the valve operates at its best:

  • Evaluation of the seat from time to time.
  • Adjusting the actuator
  • Stem cell verification
  • Check for signs of corrosion

Selection Guide and Recommendations

Choosing the Right Butterfly Valve

If you want a butterfly valve for a particular function, consider these specific instructions from Lianke Valve’s engineers:

  • The importance of the process medium.
  • The range of temperature at which the valve will work.
  • The pressure that has to be specified to use the valve or any piece of equipment.
  • The size limitations of the space into which the valve is supposed to be installed.
  • The level of actuation, which is desirable.

Industry-Specific Considerations

Specific configurations of the valves are required in different sectors of the economy:

Chemical Processing:

  • Fluorine-lined butterfly valves for corrosive media
  • PTFE/PFA lining for maximum chemical resistance
  • Temperature conditions, which conform to the process

Water Treatment:

  • Wafer-type butterfly valve for less demanding applications
  • Double-flanged butterfly valve for high-pressure applications
  • Stainless steel butterfly valve for service involving clean water

Making the Right Choice

Expert Recommendations

Corrosive environments are best served with Lianke Valve’s fluorine liner butterfly valves, which provide:

  • Better endurance against chemicals
  • Extended service life
  • Proper functioning
  • Comprehensive size range from DN40 to DN1200

Frequently Asked Questions

How does the fluorine lining improve valve durability?

The fluorine lining provides a shield for corrosive media to intrude on the lean body of the valve, which is why it provides extended service life.

What actuator options are available?

Lianke Valve’s butterfly valves can be manually, electrically, pneumatically, and hydraulically actuated, bringing versatility to the whole range of uses.

Can these valves handle high temperatures?

With temperature ratings as high as 180° C for PFA-lined versions, these valves are for high-temperature applications.

Conclusion

Choosing the proper sized and constructed butterfly valve is paramount in maintaining system efficiency and reliability. Lianke Valve’s fluorine-lined valves will give excellent performance and reliability in harsh corrosive environments.

Want to improve your industrial flow control systems? Discover the wide range of Lianke Valve’s fluorine-lined butterfly valves. Our technical team is waiting to hear from you and help you choose the best valve for your specific application.

Resources:

  1. Lianke Valve: Fluorine-Lined Butterfly Valve
  2. API Standards: API 6D Specification for Pipeline and Piping Valves
  3. Valve World: Technical Articles on Butterfly Valves
  4. Chemical Processing: Valve Selection Guidelines
  5. Flow Control Network: Butterfly Valve Resources
  6. Industrial Valve Summit: Valve Industry Standards

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