A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5895-01-055-6812
NSN 5998-01-501-9178
NSN 6610-01-120-7670
NSN 5990-01-250-4198
NSN 6145-00-933-5029
NSN 6685-01-076-4703
NSN 5945-00-010-8336
NSN 2925-01-519-1247
NSN 6685-01-241-5025
NSN 6150-00-962-2919
NSN 7035-00-179-3924
NSN 7035-01-153-1767