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 5998-01-097-3841
NSN 6135-00-377-9165
NSN 5935-01-334-2026
NSN 4140-01-053-2027
NSN 5998-00-201-4960
NSN 5945-01-023-1668
NSN 5960-01-140-8009
NSN 2925-00-152-1825
NSN 7035-00-140-3070
NSN 2925-00-215-4954
NSN 6685-00-793-1098
NSN 6240-01-224-6941