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 6620-00-876-0776
NSN 6685-00-916-8274
NSN 5920-01-409-2830
NSN 6240-00-567-4795
NSN 6145-00-351-4539
NSN 6685-00-143-7281
NSN 6220-01-582-5308
NSN 5985-00-573-6608
NSN 5990-01-067-6015
NSN 6650-00-578-6543
NSN 5945-01-462-0703
NSN 5835-00-707-6266