Double Expansion Joints

Double Expansion Joints

6000 INR/Piece

Product Details:

  • Media Gas, Liquid, Steam
  • Surface Treatment Polished / Anti-corrosive Coating
  • Max. Temperature Up to 600C
  • Flange ANSI / DIN / Customized
  • Head Code Round / Circular
  • Material Stainless Steel / Carbon Steel / Alloy Steel
  • Technique Welding / Forged
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Double Expansion Joints Price And Quantity

  • 2 Piece
  • 6000 INR/Piece
  • DN 50 mm to DN 2400 mm (or as required)
  • Two (Double Expansion)
  • Provided as per requirement
  • EJMA / ASME
  • Axial, Lateral, Angular
  • High
  • Thermal Expansion & Contraction
  • Fixed / Loose Flanges or Butt Weld End
  • 100% Hydrostatic / Pneumatic
  • Pipelines, HVAC, Power Plants, Refineries
  • Multi-ply Bellows

Double Expansion Joints Product Specifications

  • Gas, Liquid, Steam
  • Welding / Forged
  • Up to 600C
  • Polished / Anti-corrosive Coating
  • Double Expansion Joint
  • Up to 40 bar
  • Stainless Steel / Carbon Steel / Alloy Steel
  • Cylindrical / Round
  • Round / Circular
  • Flanged / Welded
  • ANSI / DIN / Customized
  • DN 50 mm to DN 2400 mm (or as required)
  • Two (Double Expansion)
  • Provided as per requirement
  • EJMA / ASME
  • Axial, Lateral, Angular
  • High
  • Thermal Expansion & Contraction
  • Fixed / Loose Flanges or Butt Weld End
  • 100% Hydrostatic / Pneumatic
  • Pipelines, HVAC, Power Plants, Refineries
  • Multi-ply Bellows

Double Expansion Joints Trade Information

  • 100-150 Piece Per Day
  • 2-3 Days
  • All India

Product Description

Double Expansion Joint is designed using two single joints connected by a common connector. It is provided with or without an anchor support base. This is widely used to absorb the axial movement. The anchor on the center nipple is located to divide the movement to share the movement. This Double Expansion Joint is designed using hard-wearing raw materials for anti-abrasive and non-corrosive performance for years to come.    


Reliable Compensation for Thermal Movements

Double Expansion Joints are engineered for optimal performance where both thermal expansion and contraction need management. Their multidirectional movement capabilities effectively reduce stress on pipeline components, thereby ensuring reliable operation of HVAC, gas, liquid, and steam transport applications in demanding industrial facilities.


High Standards and Customization

Built to comply with stringent EJMA and ASME design standards, these joints guarantee durability and operational safety. They come with polished or anti-corrosive coatings and can be tailored in terms of material, flange type, and external cover, allowing customized solutions for varied industrial requirements across India.

FAQs of Double Expansion Joints:


Q: How does a double expansion joint accommodate thermal expansion and contraction in pipelines?

A: A double expansion joint uses its two bellows and intermediate pipe to absorb axial, lateral, and angular movements resulting from temperature changes. This design compensates for thermal expansion and contraction in pipelines, preventing mechanical damage and leaks.

Q: What materials are used in the construction of these double expansion joints?

A: These expansion joints are typically fabricated from stainless steel, carbon steel, or alloy steel, providing high corrosion resistance. The selection of material depends on the application, fluid medium, and environmental conditions, with surface treatments like polishing or anti-corrosive coatings available.

Q: When should a double expansion joint be used over a single expansion joint?

A: A double expansion joint is recommended when axial, lateral, and angular movement compensation is required within a limited space, or when pipeline layouts involve complicated movement needs that single bellows cannot accommodate efficiently.

Q: Where are double expansion joints commonly installed?

A: Double expansion joints are widely used in industrial pipelines for HVAC systems, power plants, refineries, and other demanding environments where temperature variations or mechanical movements occur regularly, ensuring system integrity and minimizing maintenance.

Q: What testing processes are performed to ensure leak-proof operation?

A: Each joint undergoes rigorous 100% hydrostatic or pneumatic leak proof testing as per industry standards. These tests verify the reliability and performance of the joint under operational pressure conditions before installation.

Q: How does the external cover benefit the operation of the joint?

A: The external cover, provided as needed, protects the bellows from damage due to external factors such as mechanical impact or harsh environmental conditions, prolonging the life of the expansion joint and maintaining its operational integrity.

Q: What are the benefits of using multi-ply bellows in this design?

A: Multi-ply bellows enhance the flexibility and pressure capacity of the expansion joint, allowing for better absorption of movements and vibrations while extending operational life even under continuous stress and fluctuating temperatures.

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