November 06,2024
Roy

Introduction

Triple-offset butterfly valves are improved flow-control mechanisms that have three radial offsets for better sealing and efficiency while performing difficult operations. The design is friction-free, so it guarantees no leakage and high reliability for extreme pressures and temperatures.

Lianke Valve, a foremost player in the industry, has modified this technology in its fluorine-lined butterfly valve series to provide all-round solutions to tough industrial processes. This guide presents the technical dimensions, functions, and the advantages of the triple-offset butterfly valves to assist potential consumers in making the best possible choices for their intentions.

Key Takeaways:

  • Leveraging three (3) separate offsets, the triple-offset butterfly valve leverages a distinctive geometric design.
  • The metal-to-metal seal allows no leakage of any gas or fluid even under high pressure and high-temperature conditions
  • The advanced design does not cause dry friction during normal operations of the valve, thereby increasing the service life of the valve while reducing its maintenance.

Understanding Triple Offset Technology

The triple-offset design for a butterfly valve proves to be revolutionary in the advancements in technology for a butterfly valve. Allow us to explain how the three offsets are integrated:

First Offset: The centerline of the shaft is located to the rear of the casing’s centerline

Second Offset: The center of the shaft is located to the rear of the center sealing surface

Third Offset: The seal surfaces that face each other are created in rounded conical shapes.

The ornate shapes provide a cam mechanism that ensures that sealing surfaces do not touch each other until the last few degrees of the closing movement, thus minimizing wear and tear and increasing the life of the valves.

Key Features and Benefits

Superior Sealing Performance

  • Sealing is achieved using metal-to-metal surfaces
  • Leakage is never experienced
  • High pressures can be easily accommodated
  • PFA lining allows temperatures to be sustained at up to 180°C

Enhanced Durability

  • No friction while the valve is in operation
  • The useful life of the valve has increased
  • The number of times maintenance is done is lesser
  • Materials that are resistant to any rust or erosion

Versatile Applications

Various industries have more and superior uses for the triple-offset butterfly valve, mainly in regions where ordinary valves are unable to function optimally:

  • Chemical industry
  • Oil and gas fields
  • Power generation
  • High-temperature systems
  • Handling corrosive media

Lianke Valve’s Innovation

Lianke Valve makes fluorine-lined butterfly valves that have heated features in the industry such as:

  • Multiple lining options (FEP, PFA, PTFE)
  • Comprehensive size range (DN40~DN1200)
  • Pressure rating up to 1.6MPa
  • Excellent fatigue resistance
  • Meeting international standards (GB/T12238, API 6D)

Technical Specifications and Design Features

The design of a triple-offset butterfly valve ensures that the given engineering standards are implemented that facilitate the best possible combination. Lianke valves fluorine-lined butterfly valves, like all the other valve manufacturers’ products, are designed to meet the requirements of the relevant international standards: GB/T12238 and API 6D – which assures the quality and uniformity of the product.

Material Construction

Body Materials: WCB, CF8, CF3, CF8M, CF3M

Lining Options: FEP, PFA, PTFE

Temperature Ranges:

  • FEP: -29℃ to 120℃
  • PFA: -29℃ to 180℃
  • PTFE: -29℃ to 150℃

Comparative Analysis

Triple Offset vs. Traditional Designs

  1. Sealing Mechanism

Triple Offset: Metal-on-metal seal construction with no possible way for leakage to occur

Traditional: Employs soft seats and uses a friction seal

  1. Maintenance Requirements

Triple Offset: No need for maintenance since there are no frictional forces

Traditional: Regular maintenance due to wear and tear

  1. Application Range

Triple Offset: Capable of withstanding severe service conditions

Traditional: Can only be used in moderate service conditions

Installation and Maintenance Guidelines

Installation Best Practices

  1. Pre-Installation Checks
  • Ensure that the requested valve specifications are acceptable to the system’s requirements
  • Look for any damage caused to the item during shipping
  • Check the alignment of the valve and the pipeline

  1. Installation Steps
  • Remove all foreign materials from all mating surfaces
  • Use the proper gaskets to install the components
  • Follow the specified order of tightening the bolts
  • Carry out leak tests

Maintenance Requirements

Ensuring regular maintenance prolongs the efficiency of a unit:

  • Check the sealing surfaces for any unusual wear
  • Apply lubrication to moving parts where necessary
  • Carry out a functional test after installation of the unit
  • All maintenance-related issues have to be noted and documented

Industry Applications

  1. Chemical Processing
  • Handling corrosive chemicals
  • Temperature-sensitive materials
  • High-purity processes

  1. Industrial Applications
  • Generating Systems of Power
  • Oil and Gas Treatment
  • Water treatment facilities

  1. Specialized Uses
  • High-temperature activities
  • Pressure-critical systems
  • Clean room environment

Selection Guide

In determining the types of triple-offset butterfly valves, the following should be considered:

  1. Operating Conditions
  • Level of temperature requirements for the process
  • The level of pressure that will be required
  • Properties of the media

  1. Material Compatibility
  • The material of the valve body
  • Material of the lining
  • Requirements for the sealing

Future Trends and Innovations

The Lianke Valve Company introduces innovations in:

  • Advanced Nomenclature of Technologies for Sealing Valves and Fittings
  • Automated valve monitoring systems
  • Corrosion protection enhancement
  • Automation improvement

Next Steps

For further inquiries on Lianke Valve triple-offset butterfly valves:

  • View and download complete details of the product
  • Seek a price quotation tailored to individual specifications
  • Contact our technical support services
  • Schedule a consultation

Frequently Asked Questions

Frequently Asked Questions regarding Triple Offset Butterfly Valve:

How does the fluorine lining improve valve durability?

Thanks to the fluorine lining, the valve body is encased in a protective layer against corrosion and abrasion. Such enhancements add considerably to the operational lifespan of the valve.

What actuator types are compatible with these valves?

All Lianke Valve’s fluorine-lined butterfly valves can work with manual, electric, pneumatic, or hydraulic actuators depending on the application.

Can these valves handle high temperatures?

Yes, there are various ranges depending on the lining material used: FEP (–29℃ to 120℃), PFA (–29℃ to 180℃) PTFE (–29℃ to 150℃).

Conclusion

The advent of triple-offset butterfly valve designs has seen industrial control of flow processes revolutionized. The use of technology in Lianke Valve’s fluorine-lined butterfly valves is commendable as the company remains true to its mission and promises of practicality.If you would like to know more about the application of these and other advanced valve solutions in your processes, take a look at Lianke Valve’s product catalog or get in touch with their technical support team. We can help you in choosing the appropriate valve.

Reference

  1. Lianke Valve: Fluorine-Lined Butterfly Valve Products
  2. QRC Valves: Triple Offset Butterfly Valve Technology
  3. Valve Magazine: Industrial Valve Solutions
  4. API Standards: API 6D Specification
  5. ASME: Valve Design Standards
  6. Industrial Valve Manufacturers Association: Technical Resources
  7. Process Industry Informer: Industrial Valves
  8. ISA: Automation Standards
  9. Global Spec: Industrial Valve Directory

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