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 4140-01-608-4073
NSN 6110-01-591-0423
NSN 5915-01-026-0457
NSN 5950-01-411-6190
NSN 6650-01-602-5070
NSN 6130-00-892-3555
NSN 6645-00-240-7162
NSN 7035-01-403-2841
NSN 5925-01-611-9080
NSN 5945-00-088-1517
NSN 7035-01-158-7673
NSN 5915-00-180-8186