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 2925-01-448-2880
NSN 6620-01-386-5914
NSN 5905-01-346-2383
NSN 4140-00-267-1415
NSN 6320-00-925-0558
NSN 6145-01-547-1821
NSN 6620-00-613-3023
NSN 6620-01-367-2597
NSN 6320-01-397-0399
NSN 6685-01-237-5684
NSN 5975-01-376-9800
NSN 4140-01-251-9355