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 6685-01-173-3994
NSN 4140-01-579-5516
NSN 6220-01-194-7274
NSN 5985-00-932-2702
NSN 5965-01-390-9249
NSN 6220-00-047-3217
NSN 5975-00-921-7984
NSN 2925-01-113-6904
NSN 6130-00-197-9371
NSN 2925-00-574-8796
NSN 6685-01-586-4189
NSN 5910-00-528-5133