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 6685-01-005-0325
NSN 4140-01-626-6779
NSN 6220-01-415-2917
NSN 5945-00-357-9677
NSN 5910-01-501-2659
NSN 5930-00-148-1128
NSN 5855-00-560-0110
NSN 5998-01-069-3377
NSN 7035-01-314-7559
NSN 5895-00-617-5911
NSN 5975-01-143-0147
NSN 5935-01-167-2440