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92″ I.D. Toroidal Bellow Expansion Joint for an ASME “U” Stamp Heat Exchanger Shell

July 2, 2001
92-inch I.D. toroidal bellow expansion joint for an ASME "U" stamp heat exchanger shell
92-inch I.D. toroidal bellow expansion joint for an ASME “U” stamp heat exchanger shell

The toroidal shape gives the bellow the unique ability to carry high pressures; conversely, it also permits modest deflection ability. The expansion joint was designed for 400 PSIG at 500° F and an extension stroke of 5/16″ and the bellow’s element was fabricated from .060″ Inconel® 600 with A-516 gr 70 weld ends. The 92-inch toroidal expansion joint was also designed per ASME Sec. VIII rules as well as the Expansion Joint Manufacturer EJMA Standards. Upon fabrication completion, a hydro test was conducted at 600 PSIG to detect leaks.