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 5915-01-240-2931
NSN 6130-01-022-3716
NSN 6610-00-533-3799
NSN 5965-01-631-9848
NSN 5950-00-278-4186
NSN 6650-01-545-4351
NSN 5910-00-950-2803
NSN 5990-01-021-7303
NSN 5895-01-550-8140
NSN 5945-01-461-2401
NSN 6650-00-252-2541
NSN 6135-01-260-1100