PERFORMANCE

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  Advantage:

  1. High elastic limit, fatigue resistance
  2. Good plasticity
  3. Good corrosion resistance
  4. Good welding performance.

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  Application:

  1. Pipeline with large deformation and limited space position
  2. Large diameter pipeline with large deformation and displacement and low working pressure
  3. Devices that need to limit the take-over load
  4. Pipes requiring absorption or isolation of high frequency mechanical vibration
  5.Pipelines required to absorb earthquake or subsidence of foundation.

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  Principle of axial movement of metal bellows expansion joint :

  The welded bellows pump connector can be stretched in the direction of the shaft and allows a small amount of bending. The welded bellows pump connector is a commonly used axial bellows expansion joint for axial length compensation of pipes. In order to prevent exceeding the allowable compensation amount, a protective pull rod or a guard ring is disposed at both ends of the bellows, and a guide bracket is disposed on the pipe connecting the two ends of the protection rod or the guard ring.

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  Expanding knowledge:

  The small tie rod on the welded expansion joint is mainly used as rigid support in the transportation process or as pre-deformation adjustment of the product. It is not a bearing rod. This kind of expansion joint is simple in structure and low in price, so it should be given priority where possible in pipeline.

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.