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 5945-00-250-0722
NSN 5905-00-224-6739
NSN 5950-01-498-1218
NSN 5910-00-120-9019
NSN 5915-00-436-7831
NSN 5950-01-432-0242
NSN 5996-01-509-3403
NSN 5965-01-364-7275
NSN 5915-00-539-7673
NSN 5910-00-814-1643
NSN 6105-01-602-8187
NSN 5920-01-384-1740