AN Type expansion joints

Our AN Type expansion joints are designed to cover mid temperature and pressure ranges for general process equipment. This tied metal expansion joint retains pressure thrust developed by internal pressure, through the use of hardware. This joint is typically used for general pressure applications and features a highly customizable design.

Product Description

Features:
  • Tied custom metal expansion joints for general pressure applications.
  • Designed for, and cover the mid temperature and pressure range for general process equipment.
  • Mainly for angular movements.
  • Tied metal expansion joints retain pressure thrust developed by internal pressure, through the use of hardware.
Benefits:
  • Short build in length
  • Universally applicable
  • AN types do not require anchor points being designed for obtaining pressure thrust, due to the installed hardware.
  • Highly customizable design: Bellows geometry, material options and combinations.
  • Multiply bellows with low spring rate and high cycle life.
ITEMDESCRIPTION
1Weld end
2Hinge
3Lug
4Bellows
5Liner

Technical Specifications

Operating range:

Diameter: DN 40 ... DN 1,600 (1.5" ... 60”)
Temperature: ... 700 °C (1,292 °F)
Pressure: max. 50 barg (1,160 PSIG)

Standards and approvals:

Design code: EJMA 9, PED 97/23/EC according to: EN 13480, EN 13445, EN 14917, AD2000 and ASME B31.3

NDT and documentation: According to PED 97/23 EC rules and regulations (declaration of conformity).
Documentation can be provided per customer request e.g.:

  • Test, measurement or calculation reports
  • Material test or inspection certificates
  • Design, type or 3rd party approval
Recommended applications:
  • Refining technology
  • Oil and gas industry
  • Power plant technology
  • Pulp and paper industry
  • Shipbuilding
  • Water and waste water technology
  • Gas and steam turbines
  • Conventional boilers
  • Coal feed transport systems
  • Ash transport systems
  • Water cooling systems
  • Air and steam transport lines
Notes:

Tied metal expansion joints might require alignment guides to ensure the expansion joint only see the intended movements.