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 5835-01-214-0522
NSN 6150-01-551-0844
NSN 5996-00-603-5253
NSN 6320-00-790-4844
NSN 6320-01-445-8192
NSN 5950-01-211-7018
NSN 5910-01-088-6633
NSN 2925-01-218-5556
NSN 6685-00-663-9000
NSN 5835-01-490-9751
NSN 6240-01-576-8356
NSN 5985-01-508-3762