Valtech Engineering builds 82.0" catalyst line expansion joint

Valtech builds 82.0" OD hot wall unlined expansion joint for vessel internal sealing. Part has catalyst flow on both sides and has a braid seal for internal liner and external cover along with 304H pantograph hardware. 5 psig at 1400 F with 3 ply testable 321H bellows and 0.375" thk expanded ducting. Extensive use of E16-8-2 weld wire for low ferrite weld deposit. Bellows was solution annealed and stabilized in an inert atmosphere.

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