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 6645-00-372-2618
NSN 5915-00-331-4219
NSN 5905-00-587-0041
NSN 5990-01-426-7350
NSN 5975-01-315-6378
NSN 7035-01-023-7859
NSN 5835-01-133-6485
NSN 6650-01-397-8856
NSN 5998-00-842-4940
NSN 5960-00-557-0772
NSN 6685-01-327-9396
NSN 6145-00-465-1641