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Slip Type Expansion Joint

The photograph above shows a special slip-type expansion joint designed by the Sweco Fab Division of Piping Technology & Products, Inc. for installation in the hydrocarbon flaring system of a refinery. Several special requirements where met by a combination of design features and material specifications including an aluminum bronze bearing sleeve. The inner barrel (which is directly in the vision of the operator) is uniquely plated to be corrosion resistant. This operator is using a load cell to measure the force required to move the joint. Pressure tests were used to check the six packing seals. This joint is to be installed in a horizontal position in the mid-span of 40 feet between guided supports. The design conditions are 12” of movement, 650 ^oF, and 50 PSI of internal pressure.