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 6620-00-815-2281
NSN 5985-01-190-9758
NSN 5975-01-209-4719
NSN 4140-01-254-2739
NSN 6620-01-136-5492
NSN 6645-00-421-5287
NSN 5975-01-299-5213
NSN 5975-00-523-7950
NSN 5950-01-008-6948
NSN 6685-00-138-2739
NSN 5990-00-905-1836
NSN 6620-00-844-4363