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Externally Pressurized Expansion Joints

Item Code: DW/ZW type

Nominal Diameter(mm): DN150-DN1400

Direction of Movement: Axial

Working Pressure(MPa): 0.1, 0.25, 0.5, 0.6, 1.0, 1.6

End Fittings: Fixed Flange or Weld End

Bellows Material: Stainless Steel 304, 304L, 316, 316L, Incoloy 800H/825, Inconel 600/625

Flanges and Weld Ends: Carbon Steel or Stainless Steel



Description

Externally Pressurized Expansion Joints


Features


The expansion joint comprises inner cylinder, outer cylinder, protective sleeve and bellows. The bellow is connected to the inner and outer cylinders at both ends. The medium is in contact with the outer surface and subject to system pressure. As the bellow under outer pressure is not subject to pillar stability, the number of waves can be increased to an extent that is produces stronger axial compensation compared to normal axial expansion joints. It is applicable to long and straight pipelines with a large axial displacement.


Drawing or Sketch



Parameters





Contact HouYip -China

Factory and Office Address:

Tel: 86-20-66675297

Email: houyip@21cn.com

Addr: 98 ZhuDian Road, NanSha District, Guang Zhou City, China

Contact HouYip -Vietnam

For Vietnam sales, please contact:

Tel: +84 766 424 806

Email: houyipy@hotmail.com

Addr: No 150, Nguyen Cong Hoa Street, Le Chan district, Hai Phong, Viet Nam

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