This tied universal expansion joint is 18″ in diameter and 15′ in overall length. The expansion joint is fabricated with an Inconel® 800 bellows, 316H stainless steel pipe and 304H stainless steel tie rods and slotted hinges. The design pressure is 65 PSIG at 1076°F. A hydro-test at 127 PSIG was performed as well as dye-penetrant testing to ensure product quality.
This fabric expansion joints‘ frame and liner are fabricated from 304 stainless steel. The three-layer fabric belt consists of an inner layer of silica cloth, a middle layer of mineral wool, and an outer layer of PTFE/coated fiberglass. The dye-penetrant examination was performed on all welds of the expansion joint’s frame prior to shipping.
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U.S. Bellows, Inc. designed and fabricated 44″ fabric expansion joints for a petrochemical plant in Malaysia. The expansion joints measure 44″ ID x 40″ face to face and are fabricated from stainless steel pipe and flanges and a three layer fabric belt protected by an insulation pillow. The design conditions were 3 PSIG at 845°F. The expansion joints are designed for a lateral movement of 1/2″ and an angular rotation of 1.5°. Stainless steel covers were included to protect the fabric expansion element from possible outside damage.
