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 5985-00-150-9398
NSN 6240-01-020-9910
NSN 6610-01-214-6680
NSN 4140-01-035-5530
NSN 6105-00-904-3327
NSN 5960-01-131-7506
NSN 6685-00-452-6257
NSN 5920-01-366-3537
NSN 2925-01-151-6969
NSN 7035-01-048-7122
NSN 6105-01-221-1407
NSN 6320-00-937-5625