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 5990-01-559-0578
NSN 6240-00-594-7138
NSN 5996-00-442-3654
NSN 5965-01-097-2027
NSN 6240-01-250-3574
NSN 5985-00-997-3833
NSN 6620-00-266-2763
NSN 5975-01-330-7353
NSN 6610-01-191-6500
NSN 2925-01-364-7926
NSN 5945-01-325-1013
NSN 5925-01-056-5127