October — 2006 — The Expansion Joints Blog

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Archive for October, 2006

Tied Universal Expansion Joint for Pipe Carrying Sulfur Dioxide

October 25th, 2006 Comments off
Tied Universal Expansion Joint for Pipe Carrying Sulfur Dioxide

Tied Universal Expansion Joint for Pipe Carrying Sulfur Dioxide

This tied universal expansion joint is designed to carry hot gas up to temperatures of 1022ºF and pressure up to 5 PSIG. It has a 66″ inside diameter and is 72″ in overall length. The design movements are 4″ lateral and 4.5″ axial compression. The bellows’ material is Inconel® 825 with carbon steel weld ends. The bellows and pipe longitudinal weld seams were 100% x-rayed prior to a 5 PSIG air test and then dye-penetrant examined after testing.

Expansion Joints that Required Helium Leak Testing

October 4th, 2006 Comments off
Flange Expansion Joints for a Thermal Power Plant

Flange Expansion Joints for a Thermal Power Plant

Expansion Joints that Required Helium Leak Testing

Expansion Joints that Required Helium Leak Testing

This order required custom engineering to design and manufacture these expansion joints due to their critical service condition requirements. PT&P manufactured and tested these expansion joints to the customer specifications, EJMA Standards and US Bellows Quality Standards.

Design Conditions:

-176 PSIG at 500˚F
-.5 Axial Extension and 1.5 Axial Compression
-18″ 304 Stainless Steel Expansion Joints with Special Designed and Machined Flange Faces with a Specially Designed Gasket Groove
-Special Customer Welding Requirements to A.W.S. Standards
Critical Spring Rate Requirements
-Stringent Testing Requirements: The Bellows Longitudinal Seams were 100% X-Rayed and Dye-Penetrant Examined. Each Expansion Joint was Helium Leak Tested to a Leak Rate of 1 x 10 ֿ 7

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