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 5920-01-573-7609
NSN 5975-00-195-5382
NSN 5985-00-335-8815
NSN 6145-01-111-9553
NSN 5895-01-351-7391
NSN 5985-01-477-0565
NSN 5985-01-443-7267
NSN 5990-00-578-8850
NSN 5965-00-142-9052
NSN 6320-01-466-4175
NSN 6320-00-450-7014
NSN 5999-00-148-9072