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 5920-00-621-0239
NSN 5930-01-025-5343
NSN 6145-00-052-7991
NSN 7035-00-275-5604
NSN 6240-01-207-8056
NSN 5950-01-063-7875
NSN 6650-01-276-9723
NSN 5855-01-411-0189
NSN 6105-01-302-9705
NSN 6610-00-943-3097
NSN 5990-01-160-6978
NSN 6685-01-517-4271