HA Type expansion joints

These elbow type expansion joints are pressure balanced and designed to apply minimum forces on connecting, load sensitive equipment. These expansion joints are mainly used for axial and lateral movements.

Product Description

Features:
  • Elbow type pressure balanced expansion joints.
  • Pressure thrust eliminated by means of force balancing design principle.
  • Designed to apply minimum forces on connecting, load sensitive equipment.
  • Mainly for axial and lateral movements.
Benefits:
  • No need for main anchors to obtain pressure thrust load.
  • Minimum load transferred onto connecting equipment – force balancing principle not affected by system pressure fluctuations.
  • Highly customizable design: Bellows geometry, Material options and combinations.
  • Multiply bellows with low spring rate and high cycle life.
 
ITEMDESCRIPTION
1Carrier ring
2Line bellows
3Tie rod
4Balancing bellows
5Flange
6Elbow section
7Centre spool
8Internal liner

Technical Specifications

Operating range:

Diameter: DN 100 ... 1,000 (4" ... 40”)
Temperature: ... 550 °C (1,022 °F)
Pressure: max. 50 barg (725 PSIG)

Standards and approvals:

Design codes:
EJMA 9, PED 97/23/EC acc. 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:
  • Oil and gas industry
  • Refining technology
  • Power plant technology
  • Pulp and paper industry
  • Water and waste water technology
  • Metal production and processing
  • Shipbuilding
  • Steam turbines
  • Water cooling systems
  • Steam transport lines
  • Compressor / pumping stations
  • Lubrication systems
  • Storage tanks
Notes:

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