Double Hinged Expansion joints are mounted to limit the expansion joint to absorb angular and lateral movements in only one plane in the hinged metal expansion joints. Due to the hinges the expansion joint is not able to absorb axial movement. The hinge is likewise designed to protect the bellow from torsion. These movement limiters reduce the loads from the pressure thrust force and the temperature of the pipeline. The pressure thrust force from the media is in this way absorbed in the pipeline. The hinges are designed to absorb a larger part of the pressure than the expansion joint is able to absorb. In this way the expansion joint is relieved and at the same time limited to absorb only the movement it is designed for. Further the hinges are designed to support the loads from pipes and connected equipment, wind stresses and other external induced stresses that add external loads to the pipeline. Expansion joints with hinges are often used in a combination of two or more expansion joints. With this combination the absorption of lateral movement is possible and at the same time each expansion joint can absorb angular rotations. If more hinged expansion joints are installed the distance between them should be as large as possible to ensure the optimum use/absorption of movements.
Hinged Expansion Joints are normally designed to absorb the full pressure thrust of the Expansion Joint and may be designed to support the weight of piping and equipment. Their direction and magnitude must be indicated to the Expansion Joint manufacturer so that the hinges can be adequately designed to withstand these forces.
Features
- Absorbs angular movements in a single plane
- Restrains pressure thrust forces
- Transmits shear and wind loads
- Supports dead weight
- Avoid twisting the bellows
- No main anchors required
| General specification | |
| Applications: | Double Hinged Expansion joints are mounted to limit the expansion joint to absorb angular and lateral movements in only one plane in the hinged metal expansion joints. |
| Bellow materials | (304, 304L, 321, 310, 316, etc.) Incolloy series (800, 825, 800H, etc.) Inconel 600 and 625 Hastelloy Monel Avesta-253, SA 285, SA 515, SA 516 etc. Flange materials - all of the above + P245gh, p265gh CARBON STE |
| Fittings | Flanges ends |
| Movement absorption | Lateral movements in one plane, Angular movements in one plane |
| Temperature resistance °С | -270°C - +900 °C |
| Size | DN15-DN6000 |
Applications
- Industrial Applications
- Oil & Gas Pipelines
- HVAC Systems
FAQ
What materials are used in Double Hinged Metal Expansion Joints?
What movements can these expansion joints absorb?
How do I install Double Hinged Metal Expansion Joints?
Double Hinged Metal Expansion Joints - flanged
- Brand: Spain
- Product Code: Double Hinged Metal Expansion Joints - flanged
- Availability: ✅On stock
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