Metallic - Special

Various Design option by EJMA standards

Regardless of accessories, such as liners and covers, these models absorb all of the movements in any one length of piping but it is mainly used to absorb axial movements.

They do not restrain pressure thrust so adequate anchors and guides must be provided and they can be used only in piping systems that incorporate correctly designed anchors and pipe alignment guides.

Types

• U Shaped Rectangular
• V Shaped Rectangular
• Camera Corner Rectangular
• Miter Corner Rectangular
• Double Miter Rectangular

Construction of Rectangular Expansion Joints

• Variety of Materials

  The bellows can be manufactured in a variety of materials (the same as for round expansion joints), including austenitic stainless steels (300 series), duplex, aluminium, titanium, and high-nickel alloys such as Inconel, Incoloy, Hastelloy and Monel.

• Insulation of rectangular expansion joints

  To withstand conditions that have a high internal temperature (e.g.1000°C) and low external temperature (e.g. 90°C), a special flow liner can be fitted (for example made from 1.4845). The liner is made with expansion gaps to enable it to expand at the operating temperature without generating unacceptable buckling at the hot face of the liner. As part of the installation, the void in the flow liner is filled with an insulation bolster comprising high-temperature insulating materials. This reduces the temperature across the insulation to provide a lower "skin" temperature, for example 90°C.