If a pipeline is subject to a change in length caused by a change in temperature of the surroundings, by the medium or if these changes are caused by other circumstances, such as sinking of the support, the Hegawa Expansion Joint is the ideal tool to absorb forces caused by the change of length.
The Hegawa Expansion Joint is a sliding type which is sealed by a long packing tube. The great advantage of this design is that one expansion joint is able to
change its length up to 250 mm. Another advantage is that any type of packing can be used which allows the Hegawa Expansion Joint to be engineered for any
medium.
The Hegawa Expansion Joint can be supplied in a nominal diameter of 50 mm up to 600 mm in AISI 304 stainless steel with standard a synthetic Teflon impregnated packing to minimise maintenance. The Expansion Joint is available with flanges or pipe ends that are bevelled for welding also they can be ordered with a restriction device. Once fabricated the stainless steel expansion joint is stained and fully passivated, to obtain the highest possible degree of corrosion resistance. As the Hegawa Expansion Joint is engineered for each application, requirements such as special lengths, alternative materials or special packing can be incorporated in the design.
