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 5905-01-187-1888
NSN 4140-00-056-3904
NSN 5990-01-605-4769
NSN 6645-01-618-1983
NSN 6220-01-362-7195
NSN 5999-01-323-2330
NSN 5960-00-519-8675
NSN 5855-00-973-5717
NSN 6130-01-363-6848
NSN 5950-01-651-6075
NSN 2925-00-035-5633
NSN 6685-00-692-3047