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 6135-00-686-4777
NSN 6145-01-376-6875
NSN 6610-00-841-8221
NSN 5999-01-332-2879
NSN 5985-01-541-4797
NSN 5910-00-434-1778
NSN 5985-01-576-9997
NSN 6150-01-100-4337
NSN 5975-01-100-1063
NSN 5925-01-230-2883
NSN 6135-01-010-0891
NSN 6105-01-215-0579