EX Type
expansion joints
EX Type
expansion joints
| Item | Description |
| 1 | Inlet / line pipe |
| 2 | Outer casing |
| 3 | Bellows |
| 4 | Guide ring |
| 5 | Flange |
EX Type
expansion joints
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.
Advantages
- 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.
Materials
- Bellows: 1.4541 (AISI 321); 1.4301 (AISI 304); 1.4306 (AISI 304L); 1.4401 (AISI 316); 1.4404 (AISI 316L); 1.4571 (AISI 316Ti); 1.4828 (AISI 309); 1.4547 (254 SMO); 2.4816 (Inconel® 600); 2.4856 (Inconel® 625/LCF); 1.4876 (Incoloy® 800/H)
- Connections: 1.0038 – (S235JRG2); 1.0460 – (P250GH); 1.0315 – ; 1.0254 (P235TR1); 1.0425 – (P265GH); 1.5415 – (16Mo3); 1.7335 – (13CrMo4-5); 1.4401 (AISI 316); 1.4404 (AISI 316L); 1.4541(AISI 321)
- Flanges: 1.0038 - S235JRG2; 1.0425 - P265GH; 1.0315 - P235G2TH; 1.0254 (P235TR1); 1.0425 - P265GH; 1.5415 - 16Mo3; 1.7335 – 13CrMo4-5; 1.4404 (AISI 316L); 1.4436 (AISI 316)
Other materials are available on request.
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
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.
Product variants
EX1: Single expansion joints
Expansion joints can be designed with one or two bellows depending on requirements for e.g., movements.
Expansion joints can be designed with one or two bellows depending on requirements for e.g., movements.
EX2: Universal expansion joints
Expansion joints can be designed with one or two bellows depending on requirements for e.g., movements.
Expansion joints can be designed with one or two bellows depending on requirements for e.g., movements.
Similar products
AN Type expansion joints
- 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.
AX Type expansion joints
- Untied custom metal expansion joints for general pressure applications.
- Designed to cover the mid temperature and pressure range for general process equipment.
- Mainly intended for axial movements.
- Multiply bellows with low spring rate and high cycle life.
CB Clamshell metal expansion joints
- Bellows or expansion joints split into longitudinal segments for installation without opening pipework.
- Temporary repair solution for damaged expansion joints.
- Can handle axial, lateral and angular movements.
- The permissible combination and magnitude of movements depends on the application and the existing expansion joint that is to be repaired.