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 5920-01-175-8184
NSN 5945-01-160-9070
NSN 5996-01-088-7074
NSN 5930-01-608-2618
NSN 5915-01-157-2807
NSN 6620-01-391-7331
NSN 6220-01-475-3202
NSN 5910-00-822-3765
NSN 6645-00-171-9639
NSN 4140-01-190-3280
NSN 5935-01-385-3315
NSN 2925-01-426-3410