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 5950-01-651-1992
NSN 5985-01-366-5129
NSN 2925-00-118-3373
NSN 6130-01-222-7240
NSN 5945-00-661-0506
NSN 5895-01-478-0863
NSN 6145-01-512-8688
NSN 6685-01-228-1298
NSN 5985-00-864-5204
NSN 5996-01-623-6268
NSN 6610-01-141-7014
NSN 5965-00-892-1094