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 5998-01-377-3855
NSN 7035-01-339-5480
NSN 5925-00-059-4991
NSN 6610-01-170-2250
NSN 5950-00-218-4922
NSN 6650-00-287-5868
NSN 6620-00-950-5979
NSN 5905-00-491-6577
NSN 6685-01-649-8166
NSN 6320-00-701-0437
NSN 5915-00-884-2925
NSN 5998-01-516-8199