Abstract: An inlet check valve for use with inflatable buoyancy tubes such as are used on life rafts and escape slides. The inlet check valve being freely rotatable within the flange affixed to the raft fabric thereby allowing for easier packing and deployment due to the design of the inlet check valve to rotate within the flange to seek a lower stress orientation. In addition, the inlet check valve is readily removable from the flange if valve replacement or repair is needed. Furthermore, a manifold may be used which includes multiple inlet check valves coupled together.

Abstract: A pressure relief valve for use with inflatable devices such as life rafts and escape slides which provide significant improvement in exhaust flows while maintaining a highly desirable compact configuration, particularly as to the height dimension. The pressure relief valve including a poppet having a protected skirt thereon which is biased within a valve body to maintain pressure within the inflatable device unless a preselected maximum pressure is exceeded whereby the poppet releases and opens a fluid passage to exhaust ports. The protected skirt providing a more efficient and thus improved "pop action" which results in improved low pressure PRV performance.