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 6105-01-169-9059
NSN 5925-01-563-3556
NSN 5975-01-123-9111
NSN 5975-01-596-1512
NSN 6685-01-415-2235
NSN 5925-00-253-4255
NSN 6620-00-329-0632
NSN 5965-00-642-9879
NSN 5990-01-510-4699
NSN 6685-01-322-6429
NSN 6645-00-287-9192
NSN 6135-00-062-5080