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 5855-01-151-5541
NSN 6110-01-187-0353
NSN 5999-01-412-0961
NSN 6320-01-216-1678
NSN 4140-01-187-6922
NSN 5999-00-205-0918
NSN 5985-01-576-8960
NSN 2925-00-914-7627
NSN 5960-00-539-2253
NSN 6610-00-161-0680
NSN 7035-01-565-7679
NSN 6130-01-283-5764