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 5945-01-092-9951
NSN 5998-01-620-6722
NSN 6135-01-247-5660
NSN 5998-01-476-0735
NSN 5996-00-082-0320
NSN 7035-01-072-7785
NSN 5990-00-505-1546
NSN 6130-00-205-1714
NSN 5985-01-178-9714
NSN 5975-00-451-5001
NSN 6645-01-480-0662
NSN 6650-00-520-4253