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 5910-01-286-0181
NSN 5905-01-090-0792
NSN 5985-01-039-9326
NSN 4140-01-580-8573
NSN 2925-01-560-4123
NSN 5910-01-161-0791
NSN 6240-01-386-5952
NSN 6220-00-771-9109
NSN 6150-01-261-7945
NSN 2925-01-595-4345
NSN 5998-00-973-4011
NSN 5996-00-794-2546