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 6645-01-356-5946
NSN 6240-01-210-4217
NSN 5835-01-373-9506
NSN 5996-01-321-3092
NSN 5910-00-081-9173
NSN 5965-00-378-3403
NSN 6145-00-006-8438
NSN 7035-01-462-2953
NSN 6320-01-330-2138
NSN 6145-00-730-3933
NSN 5835-01-431-6877
NSN 6145-01-208-2990