Gimbal Expansion Joints — The Expansion Joints Blog

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72″ Double Gimbal and Single Hinged Flanged and Flued Head Expansion Joints

July 11th, 2011 Comments off

72 Inch Universal Gimbal and Single Hinged Flanged and Flued Head Expansion Joints

U.S. Bellows designed and fabricated a 180″ long double gimbal expansion joint with a 90° elbow and flanged and flued head bellows, and a 114″ long single hinged expansion joint with flanged and flued head bellows. After performing a pipe stress analysis on the line, it was determined that spring supports were necessary, so F-Type variable spring supports were also provided for this project and shipped with the expansion joints.

All material in contact with the service fluid is fabricated from 304 H stainless steel and all external hardware is 304 stainless steel. The expansion joint bellows is designed for 5° angular movement and 1100°F at 10 psig. A spot x-ray test, soap and air test, and 100% dye penetrant examination on all welds were performed prior to shipment.

Examples of Common Types of Expansion Joints

January 26th, 2011 Comments off

Single tied expansion joint fabricated entirely of stainless steel for a pipeline in Alaska.Single Tied Expansion Joints for a Pipeline in Alaska

The expansion joint assemblies are fabricated entirely from stainless steel with a design pressure of 50 PSIG. They are designed with tie rods that do not permit axial movement, but allow for lateral movement up to 1/2″. The expansion joints will be used on a process line that contains exhaust gas and hydrocarbon vapor at a low concentration. It will connect an oil tank with a vapor control system.

View Information on Single Expansion Joints

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Universal metallic expansion joint with 300 lb. raised face stainless steel flanges.Universal Metallic Expansion Joints with 300 lb. Raised Face Stainless Steel Flanges

The expansion joint assemblies are fabricated for a 12″ pipe and are designed for 2-1/2″ lateral movement. The design pressure is 276 PSIG with a design temperature of 626°F. 316L stainless steel was used for the bellows and tie rods. The expansion joints include 300 lb. raised face stainless steel flanges to accommodate low spring rate requirements.

View Information on Universal Expansion Joints

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Hinged expansion joints with refractory lining.Hinged Expansion Joints with Refractory Lining

Hinges cause the unit to bend in a single plane. The hinge mechanism is designed to accept the full pressure thrust.

  • Design Pressure: 75.4 PSIG
  • Design Temperature: 1400°F
  • 100% X-ray Tested
  • Pneumatically Tested weld seams to 83 PSIG

View Information on Hinged Expansion Joints

View Information on Refractory-lined Expansion Joints

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Elbow pressure balanced expansion joints fabricated for a 36" pipe.Elbow Pressure Balanced Expansion Joints

The expansion joints are fabricated for a 36″ pipe and are designed with Inconel® 625 grade LCF bellows. They include a liner provided with drain holes to prevent accumulation of corrosive condensation.

View Information on Pressure Balanced Expansion Joints

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Inline pressure balanced expansion joints designed to balance 48,000 lb. of pressure thrust.Inline Pressure Balanced Expansion Joints

- Design: 125 PSIG, Temperature: 244°F

- 304 SS Bellows, Flanges & Liners

- Designed to Balance 48,000 lb. of Pressure Thrust

View Information on Inline Pressure Balanced Joints

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Externally Pressurized Expansion JointsExternally Pressurized Expansion Joints

These expansion joints are fabricated for a piping system in a steam plant. They include 304 SS bellows and carbon steel shell and flanges, and are designed for 150 PSIG and 350°F.

View Information on Externally Pressurized Joints

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Gimbal expansion joint with floating rings designed for a 55" diameter overhead vapor line at a refinery.

Gimbal Expansion Joint with Floating Rings

These expansion joints are designed for a 55″ diameter overhead vapor line at a refinery. The overall length is 310″ and the bellows are fabricated from 625 LCF. The expansion joint is designed for 50 PSIG and 1075°F.

View Information on Gimbal Expansion Joints

44″ Double Gimbal Universal Expansion Joint for an Oil Refinery in Wyoming

November 24th, 2009 Comments off
44″ Double Gimbal Universal Expansion Joint

44″ Double Gimbal Universal Expansion Joint

Reducer

Reducer

This gimbal expansion joint is designed for angular rotation in two planes of up to 4° in each plane. It has an overall length of 140″ with a total assembly weight of 11,000 lb. It is fabricated with 316 stainless steel bellows and carbon steel piping. This expansion joint was 100% dye-penetrant examined and hydro-tested prior to shipment. U.S. Bellows, Inc. and Piping Technology & Products, Inc. also furnished the spring supports and pipe attachments for this project.

Dual Gimbal Expansion Joints for a Regeneration Blower Outlet in Saudi

May 4th, 2005 Comments off
Dual Gimbal Expansion Joints for a Regeneration Blower Outlet in Saudi

Dual Gimbal Expansion Joints for a Regeneration Blower Outlet in Saudi

This 3,400 lb. expansion joint is capable of 2.3″ lateral movement and 1.5″ axial movement, and was designed for 65 PSIG and 1076ºF. It was made with SB-409 alloy 800 bellows and 316H piping and gimbal components. The dimension of this expansion joint is 24″ x 168″ x 71″. This gimbal expansion joint contains two sets of hinge pins or pivots with the axis of each set perpendicular to each other. To ensure the products quality, the joints were 100% X-rayed, and hydro-tested at 120 PSIG prior to delivery.

55" O.D. Refractory Lined Universal Gimbal Expansion Joints with slotted hinges for a refinery in Joliet

January 30th, 2004 Comments off
286" O.A.L. Expansion Joint Designed for the Regenerator Stand Pipe

286" O.A.L. Expansion Joint Designed for the Regenerator Stand Pipe

163" O.A.L Expansion Joint Designed for the Reactor Stand Pipe

163" O.A.L Expansion Joint Designed for the Reactor Stand Pipe

U.S. Bellows, Inc. specially designed and manufactured two 55″ O.D. refractory lined universal gimbal expansion joints for a refinery in Joliet. These expansion joints are equipped with slotted hinges with an overall length of 163″ and 286″ respectively.  The 163″ O.A.L. expansion joint, designed for 60 PSIG and 1020°F, will be used at the reactor stand pipe of the refinery. The 286″ O.A.L. expansion joint will be used for the regenerator stand pipe of the refinery and it is designed for 57 PSIG and 1300°F. Both expansion joints consist of a A516 Gr70 pipe, two SB-443 two-ply bellows and a slotted hinge.

To ensure quality, 100% dye-penetration, 100% x-ray and pressure tests were performed on the bellows. Pneumatic and vacuum tests were also conducted on the expansion joints and between bellows dry plies prior to shipping.

55″ O.D. Universal Gimbal Expansion Joint with Floating Rings for a Refinery in Joliet

January 16th, 2004 Comments off
55 O.D. Universal Gimbal Expansion Joint with Floating Rings for a Refinery in Joliet

55 O.D. Universal Gimbal Expansion Joint with Floating Rings for a Refinery in Joliet

55 O.D. Universal Gimbal Expansion Joint with Floating Rings for a Refinery in Joliet

Pneumatic Test on the Expansion Joint at 55 PSIG

U.S. Bellows, Inc. custom designed and manufactured a 55 O.D. universal gimbal expansion joint with floating rings for the FCC overhead vapor line at the refinery.  This expansion joint has an overall length of 310 and is fabricated from A387 Gr 11 CI2 spool and Inconel® 625 LCF bellows. It is designed for 50 PSIG and 1075°F with 13 of lateral movement.

To ensure quality, 100% dye-penetration, 100% x-ray and pressure tests were performed on the bellows. Pneumatic tests were also conducted on the expansion joint and between bellows dry plies at 55 and 15 PSIG, respectively, prior to shipping.

192″ Double Gimbal Expansion Joints for a Chemical Refinery in Channel View, Texas

December 19th, 2003 Comments off
192" Double Gimbal Expansion Joints for a Chemical Refinery in Channel View, Texas

192" Double Gimbal Expansion Joints for a Chemical Refinery in Channel View, Texas

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.

36" Expansion Joints for an Engineering and Construction Company in Singapore

November 8th, 1999 Comments off
36" Expansion Joints for an Engineering and Construction Company in Singapore

Expansion Joints

36" Expansion Joints for an Engineering and Construction Company in Singapore

Expansion Joint

36" Expansion Joints for an Engineering and Construction Company in Singapore

Gimbal Expansion Joint

36" Expansion Joints for an Engineering and Construction Company in Singapore

Expansion Joint in the Field

In October 1999, U.S. Bellow, Inc., the expansion joint subsidiary of Piping Technology & Products, Inc., fabricated three expansion joints for an E&C company in Singapore. The expansion joints manufactured included one 36″ single hinged expansion joint, one 36″ double hinged expansion joint and one 36″ double gimbal expansion joint. These expansion joints will be used at a compressor in Singapore. Due to the critical applications of these expansion joints, they were tested per ASME Sect. VIII Div. 1 Appendix 26. The bellows together with the hinge assembly were hydro-tested. Additionally, a dry nitrogen test between the two plies was conducted to ensure that each of the two plies would withstand the design pressure. Gimbal expansion joints allow for restrained angular movement of attached piping in two planes. Expansion joints, in general, allow for axial, lateral, angular and torsional movement in piping systems.

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