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 5910-01-035-1525
NSN 5895-01-464-6133
NSN 5925-01-634-0664
NSN 5998-00-945-0407
NSN 6110-01-498-5120
NSN 6645-01-307-3327
NSN 7035-01-391-3518
NSN 5945-01-117-6774
NSN 6240-00-449-2070
NSN 5998-01-398-7523
NSN 6220-01-329-4975
NSN 5925-01-626-4697