Large Double Gimbal, Tied Elbow and Tied Universal
Four large refractory lined expansion joints shipped to a Southern California refinery. They were 73 inch (1854mm) diameter designed for 50 psig (3.5 barg) at 1450 F (788 C). All cold wall refractory lined. The double gimbal was slotted and designed for large external forces and moments. The tied universal has a perforated metal cover for personnel heat protection. All designs were two ply testable.
In-Line Pressure Balanced Cat Cracker with Gimbaled Pantograph
This unique design is pressure balanced so no expensive main anchors are needed in the piping system. It also incorporates a gimbaled pantograph allowing lateral in and out of plane. It is a 44 inch (1118mm) cold wall, refractory lined EJ designed for 105 psig (7.2 barg) at 1025 F (552 C). All bellows are two ply testable and internal liners have a 309 braid seal and insulation.