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 5905-01-104-5874
NSN 6240-01-408-5102
NSN 6650-01-437-9557
NSN 5985-01-334-0617
NSN 5965-00-578-8931
NSN 6620-01-011-3449
NSN 6240-00-013-4764
NSN 5915-00-224-7770
NSN 5990-01-099-8574
NSN 6145-01-445-4707
NSN 5975-00-203-1265
NSN 5945-01-188-3862