Abstract: Fire-resistant flexible hose construction particularly adapted for aerospace applications as such construction may exhibit a flame class rating of “Class A” at 0 gallons per minute (0 liters per minute) flow and 1500 psig (10.3 MPa) pressure under SAE Standard AS1055, “Fire Testing of Flexible Hose, Tube Assemblies, Coils, Fittings and Similar System Components.” The construction includes a tubular core, a thermal insulation layer surrounding the core, one or more reinforcement layers surrounding the thermal insulation layer, and a firesleeve layer surrounding the one or more reinforcement layers. The thermal insulation layer may be formed of a thermoplastic resin such as a polyimide having a melting temperature of at least about 300° C., and each of the reinforcement layers may be braided or otherwise formed of a metal wire.

Abstract: A lockwireless, anti-rotation fitting for connection to a connector. The fitting includes a coupler having a series of circumferential engagement portions disposed about an outer peripheral surface, and a nut receivable coaxially over the outer peripheral surface of the coupler, and which is threadably engageable with the connector. The nut has an opening through which is received the end of a locking mechanism. The locking mechanism end is interferingly engageable with the coupler engagement portions such that with the nut being received coaxially over the coupler outer peripheral surface of the coupler, the nut is threadably engageable with the connector urging the coupler into a sealing engagement with a sealing surface of the connector, and with the coupler being so engaged, the locking mechanism end is interferingly engaged with at least one of the coupler engagement portions delimiting the rotation of the nut relative to the connector.

Abstract: A lockwireless, anti-rotation fitting for connection to a connector. The fitting includes a coupler having a series of circumferential engagement portions disposed about an outer peripheral surface, and a nut receivable coaxially over the outer peripheral surface of the coupler, and which is threadably engageable with the connector. The nut also has a series of complementary circumferential engagement portions disposed about at an inner peripheral surface. With the nut being received coaxially over the first outer peripheral surface of the coupler, the nut is threadably engageable with the connector urging the coupler into a sealing engagement with a sealing surface of the connector, and with the coupler being engaged with the connector sealing surface, the first and second engagement portions are interengaged to delimit the rotation of the nut relative to the connector.