PERFORMANCE

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  Product features:

  1. Large axial displacement compensation and long service life.
  2. Excellent material and stable operation.
  3. Compensate the axial thermal deformation of absorption pipeline.
  4 Corrugated bellow expansion and contraction, easy to install and disassemble the valve pipe.
  5 Absorb equipment vibration to reduce the impact of equipment vibration on the pipeline.

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  Application:

  The unlimited metal expansion joint can be used in a variety of applications and can be used over temperature, pressure and size.
  The unlimited metal expansion joint uses the telescopic and offset of its main elastic element bellows to compensate the displacement of the pipeline. The compensation amount is large and the elasticity is good. The product is suitable for conveying seawater, fresh water, hot and cold water, drinking water and life. Sewage, crude oil, fuel oil, lubricating oil, refined oil, air, gas, etc.

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  Principle of axial movement of metal bellows expansion joint :

  Axial movement is considered to be the elongation or compression of the pipe system on its longitudinal axis, which means that the total length of the expansion joint will extend or compress during the absorption movement. An axial expansion joint designed to absorb large motions can contain one, two or more bellows in one unit, and can also achieve greater motion by pretensioning or by installing multiple expansion joints on the pipe section. . Depending on the nominal diameter and length, the axial expansion joints are able to absorb small lateral and angular deviations as well as mounting tolerances. However, we recommend the use of the main function that should limit the axial expansion joint, otherwise its service life may be adversely affected.

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  Structure:

  The unlimited metal expansion joint is also called a shock absorbing corrugated bellow, a bellows, an expansion joint, or a telescopic joint. It consists of a bellows (an elastic element) that constitutes its working body, and accessories such as a joint and a flange. The unlimited metal expansion joint belongs to a compensating element.

WORKING PRINCIPLE

PRODUCT PARAMETERS

NOTES:

1. Flange is available with DIN Standard,ANSI Standard,JIS Standard,and BS Standard.
2. Please sent us letter and drawing for customization if you have special requirements.

PRODUCT ALBUM

INSTALLATION INSTRUCTIONS

1. It should be noted that the metal expansion joint does not absorb torque, so it is not allowed to be twisted when installing stainless steel bellows.
2. 2.In addition to the pre-tension or “cold-tight” deformation required by the design, it is strictly prohibited to use bellows deformation method to adjust the deviation of the installation pipeline, so as to avoid affecting the normal function of the metal bellows, otherwise it will reduce its service life and increase the load of the pipeline, equipment and supporting components.
3. The insulation layer should be made on the outer protective jacket of the metal bellows, not directly on the bellows.
4. During installation, no welding slag is allowed to splash on the surface of bellows, causing other mechanical damage to the bellows.
5. The bracket must meet the design requirements. It is strictly prohibited to test the pressure in the pipeline before the bracket is installed in order to avoid pulling it out.
6. All moving parts of the stainless steel 304L metal bellows shall not be caught or restricted by the external components.