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 6320-00-593-0379
NSN 6645-00-356-5705
NSN 6135-00-062-5080
NSN 5920-01-569-5751
NSN 6610-01-429-7267
NSN 6320-01-519-8767
NSN 2925-01-511-5359
NSN 5910-01-548-4539
NSN 6620-01-312-6350
NSN 5920-01-261-6358
NSN 5910-00-518-0600
NSN 5996-01-215-0944