Tag: In-line Pressure Balanced Expansion Joint

U.S. Bellows custom designed these in-line pressure balanced expansion joints for a chemical plant in Texas. They are 38″ face-to-face and 58-1/2″ diameter. The bellows are fabricated from 304 stainless steel with carbon steel tie rods and flange plates. They are designed for a 725°F at 14.22 psig, with a spring rate of 422 lb./in. and 1.5″ of axial compression. The expansion joints were 100% dye-penetrant examined and air leak tested prior to shipment.

U.S. Bellows custom designed this in-line pressure balanced expansion joint for an oil refinery in India. The unit is 16″ in diameter and 59″ overall length. The bellows were fabricated from 304 stainless steel and the remaining parts from carbon steel. It is designed for an operating temperature of 248°F at 86 psig with 2.5″ of axial compression. The expansion joint was 100% dye-penetrant tested and hydro-tested prior to shipment.

These inline pressure balanced expansion joints were custom designed by U.S. Bellows for a wastewater treatment plant in California. The units are 12″ in diameter and 32″ in overall length. All components of the expansion joints (bellows, covers, liners, rings, and flanges) were completely fabricated from 304 stainless steel. They are designed for an operating temperature 200° at 55 psig, with 7/8″ of axial compression and .07″ of lateral movement. All units were 100% dye-penetrant, PMI, X-Ray, and hydro-tested prior to shipment.

U.S. Bellows custom designed an inline pressure balanced expansion joint for an ammonia and urea plant in Bolivia. The bellows and liners are fabricated from 304 stainless steel and the assembly from carbon steel. The unit is 46″ diameter and 71-3/8″ in overall length. The expansion joint was designed for 0.8″ axial movement with an operating temperature of 392°F at 114 psig. A 100% dye penetrant test, x-ray, and hydro-test were performed prior to shipment.

U.S. Bellows custom-designed inline pressure balanced expansion joints for a pipeline in Texas. The bellows are fabricated from 316 stainless steel and the flanges and liners from carbon steel. The units have a 20″ diameter and are 30″ in overall length. The expansion joints were designed for 0.17″ compression with an operating temperature of 150°F at 285 psig. A dye penetrant test and pressure test at 300 PSIG was performed prior to shipment.

This inline pressure balanced expansion joint is fabricated from ASTM A-240 321 SS bellows and ASTM A-105 carbon steel flanges. Due to its highly corrosive application, all of the internal surfaces are coated with a PTFE lining to resist corrosion. The expansion joint is designed for 51 PSIG at 167°F. and was hydro-tested at 77 PSIG prior to shipping.

U.S. Bellows, Inc. fabricated three, 24″, inline pressure balanced expansion joints for a petrochemical plant in Venezuela. In order to absorb partial axial and lateral movements, these expansion joints were designed at 175 PSIG and 610ºF. The bellows are composed of Inconel® 625LCF material and the flanges and liners are constructed from SA516 Grade 70 material.