EX Type expansion joints

These untied metal expansion joints feature an externally pressurized design and are intended for large axial movements, making them useful for general pressure applications. 

Product Description

Features:
  • Untied metal expansion joints for general pressure applications.
  • Externally pressurized design.
  • Designed for, and cover the mid temperature and pressure range for general process equipment.
  • Intended for large axial movements.
Benefits:
  • Self-guiding design – internal rings guide the movement of the expansion joint.
  • Self-cleaning / draining – no deposits inside convolutions because the bellows element is externally pressurized.
  • The pressure does not produce column squirm (stability ensured at higher pressure).
  • Highly customizable design: Bellows geometry, Material options and combinations.
  • Multiply bellows with low spring rate and high cycle life.
ITEMDESCRIPTION
1Inlet / line pipe
2Outer casing
3Bellows
4Guide ring
5Flange

Technical Specifications

Operating range:

Diameter: DN 40 ... DN 1,600 (1.5" ... 63”)
Temperature: ... 550 °C (1,022 °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
  • Water cooling systems
  • Air and steam transport lines
Notes:

Untied metal expansion joints require guide and support from adjacent equipment or structure.