Single Tied Expansion Joints — The Expansion Joints Blog

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42″ Dia. Single Tied Expansion Joints Designed for a Solar Electric Generation Facility

November 26th, 2012 Comments off

42" Dia. Single Tied Expansion Joints Designed for a Solar Electric Generation Facility

These single tied expansion joints are 40″ and 42″ diameter, and were designed for a solar electric generation facility. The bellows and flow liner are 304 stainless steel. The stub ends are fabricated from carbon steel. The expansion joints were designed for a lateral movement of 1/2″, and 15 PSIG at 250°F. They were 100% dye penetrant examined and hydro-tested prior to shipping to California.

102″ Dia. Tied Universal and Hinged Expansion Joints

March 12th, 2012 Comments off

102" Dia. Tied Universal and Hinged Expansion Joints

U.S. Bellows designed and fabricated tied universal expansion joints and single hinged expansion joints for a power plant in Canada. All the units were fabricated from carbon steel with 316 stainless steel bellows. The universal tied joints are 102″ diameter, 225″ long and are designed for 8.2″ lateral movement. The hinged joints are 102″ diameter, 71″ long and designed for 0.76° angular rotation. Each expansion joint can withstand temperatures up to 250°F at 7.25 psig. The bellows and pipe long seams were 100% x-rayed, and all the welds were 100% dye penetrant tested. A soap and air test was performed prior to shipment.

102" Dia. Tied Universal and Hinged Expansion Joints

76″ dia. Single Tied Expansion Joint for a Hot Blast Valve in a Steel Mill

November 7th, 2011 Comments off
76" dia. Single Tied Expansion Joint for a Hot Blast Valve in a Steel Mill

 

This single tied expansion joint is custom designed with Inconel® 825 bellows with carbon steel flanges, liners and pipes. It is 76″ I.D., 90″ O.D. and is 31-1/2″ long. It was designed for 1,900°F at 100 psig with 1″ compression. A meshed expanded metal cover was installed to allow for hot air to escape. Tests performed included a 100% dye penetrant, x-ray, and ultrasonic on pressure bearing welds. Finished units were hydro-tested at 1.5 times the design pressure. The expansion joints were designed with an inner liner to accommodate for easier field installation of refractory lining.

 

76" dia. Single Tied Expansion Joint for a Hot Blast Valve in a Steel Mill

12" and 24" Single Tied Expansion Joints

December 26th, 2007 Comments off
12" and 24" Single Tied Expansion Joints

12" and 24" Single Tied Expansion Joints

12" and 24" Single Tied Expansion Joints

12" and 24" Single Tied Expansion Joints

U.S. Bellows, Inc. designed and fabricated single tied expansion joints for a pipeline in Alaska. The 12″ diameter expansion joints had an overall length of 12″ and the 24″ diameter expansion joint had an overall length of 14 1/2″.

The expansion joint assemblies are fabricated entirely from stainless steel. The design pressure of the expansion joints was 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. The expansion joints were 100% dye-penetrant tested and hydro-tested to ensure quality control.

Single Tied Metallic Expansion Joints with Two-Ply Alloy Bellows

December 27th, 2006 Comments off
Single Tied Metallic Expansion Joints with Two-Ply Alloy Bellows

Single Tied Metallic Expansion Joints with Two-Ply Alloy Bellows

Single Tied Metallic Expansion Joints with Two-Ply Alloy Bellows

Single Tied Metallic Expansion Joints with Two-Ply Alloy Bellows

Design Conditions:
- Pressure: 243 PSIG
- Temperature: 108°F
- Axial Compression: 0.020″
- Lateral Movement: 0.200″
- Axial Spring Rate: 13,320 lb/in
- Lateral Spring Rate: 121,202 lb/in

Details:
- Left: 24″ Diameter, Right: 32″ Diameter
- 100% X-Rayed Bellows and Flanges
- 100% Dye-Penetrant Tested

Single Tied Expansion Joints for an Oil Refinery in Bakersfield, California

August 12th, 2005 Comments off
Single Tied Expansion Joints for an Oil Refinery in Bakersfield, California

Single Tied Expansion Joints for an Oil Refinery in Bakersfield, California

This single tied expansion joint was designed to withstand 400 PSIG and 200°F. The bellow was manufactured using B443 material (Inconel® 625) with a 300 lb. carbon steel flange. It measures 8” x 16” with 3/16” lateral movement. Pressure testing and 100% dye-penetrant tests were performed to ensure quality.

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