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 5855-01-188-4049
NSN 6145-01-176-2503
NSN 6685-01-188-7157
NSN 5965-01-444-1322
NSN 6240-01-617-6683
NSN 5935-00-989-3211
NSN 6620-00-709-7389
NSN 5965-00-568-5802
NSN 6105-00-906-3491
NSN 6110-01-167-7846
NSN 6645-00-966-7794
NSN 5985-00-076-8960