Abstract: A check valve assembly for a supply pipe. The check valve assembly includes a hinge pin, a first flapper, and a second flapper. The first flapper is pivotally coupled to the second flapper with the hinge pin. The check valve assembly also includes a stopper located between the first flapper and the second flapper. The stopper is configured to limit movement of the first flapper and the second flapper. The check valve assembly further includes a plate assembly located downstream of the stopper. The plate assembly is configured to break vortices formed in a fluid flow across the first flapper and the second flapper.

Abstract: A check valve assembly for a supply pipe. The check valve assembly includes a hinge pin, a first flapper, and a second flapper. The first flapper is pivotally coupled to the second flapper with the hinge pin. The check valve assembly also includes a stopper located between the first flapper and the second flapper. The stopper is configured to limit movement of the first flapper and the second flapper. The check valve assembly further includes a plate assembly located downstream of the stopper. The plate assembly is configured to break vortices formed in a fluid flow across the first flapper and the second flapper.

Abstract: An expansion joint for a jet engine, the expansion joint including a pipe defining a proximal end having a first engagement structure, wherein the pipe is part of an air system of the jet engine; and an engine hardware coupled with the proximal end of the pipe, the engine hardware having a second engagement structure engaged with the first engagement structure to couple the pipe and engine hardware relative to one another, wherein one of the first and second engagement structures comprises one or more spring fingers, and wherein the other of the first and second engagement structures comprises a ridge extending along a circumferential direction of such engagement structure.