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.
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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.
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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
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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.
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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
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Externally 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.
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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.
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