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30" Spent Catalyst Standpipe Metallic Expansion Joint with Pantographic Linkage

January 9th, 2008 Comments off
30" Spent Catalyst Standpipe Metallic Expansion Joint with Pantographic Linkage

30" Spent Catalyst Standpipe Metallic Expansion Joint with Pantographic Linkage

U.S. Bellows, Inc. fabricated this 30″ spent standpipe catalyst metallic expansion joint for a refinery in Montana. The overall installed length of the expansion joint is 89″. The design pressure was 19 PSIG and the design temperature was 1050ºF. The expansion joint is fabricated entirely from 321 stainless steel, except for the carbon steel flanges to match the existing nozzle material and drilling. The assembly is lined with abrasion resistant refractory which prevents erosion of the 321 stainless steel piping. The pantographic linkage, shown in the photo, is designed to distribute the axial compression between the two bellows and support the weight of the center pipe between the bellows.

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