Tag: double gimbal expansion joints

Type:	Double Gimbal Expansion Joints
Size:	30″ Diameter | 198″ Length
Material:	2-Ply Bellows: Inconel 625 LCF | Pipes: 316 H SS | Covers & Liners: CS
Design:	5° Angular Rotation | 1260°F | 180 psig
Testing:	100% Dye-Penetrant | PMI Examined | Hydro-tested

U.S. Bellows custom designed and fabricated double gimbal expansion joints for a chemical plant in Arkansas. The assemblies are designed with 2-ply bellows which were fabricated from Inconel 625 LCF. The pipes are 316 H stainless steel and the covers and liners are carbon steel. The units are 30″ in diameter and have an overall length of 198″. The expansion joints were designed for 5° angular rotation at 1260°F and 180 psig. Prior to shipment, the units were 100% dye penetrant tested, PMI examined, and hydro-tested.

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U.S. Bellows refurbished this double gimbal expansion joint for an oil refinery in Baytown, Texas. The bellows were replaced with Inconel 625 and the duct, elbow, cover, and liner are carbon steel. This unit has a diameter of 20″ and an overall length of 108″. The expansion joint was designed for 4″ lateral movement at 450°F and 180 psig. Prior to shipment, the unit was 100% dye penetrant tested, PMI examined, and hydrotested.

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U.S. Bellows, Inc. designed and manufactured two 192” double gimbal Expansion joints for a chemical refinery in Channel View, Texas. These expansion joints consist of A240-321 bellows, A160 Gr. pipe, A516-70 gimbal rings, A516-70 liners and A106 Gr. B purge connection rings. The expansion joints were designed for 15 PSIG and 650 F per B 31.3 and EJMA Standards. They were also designed to allow 8 degrees of angular movement during operation. To ensure quality, the Expansion joints were air tested at 22 PSIG prior to delivery.

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