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 6220-01-385-6817
NSN 6320-01-170-4068
NSN 5950-00-304-2155
NSN 5925-01-426-6923
NSN 6645-00-230-4396
NSN 6145-00-226-0515
NSN 2925-00-076-7691
NSN 5915-01-013-8995
NSN 6650-01-030-5545
NSN 6130-00-005-5536
NSN 6645-00-081-4298
NSN 5920-00-339-0338