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 5895-01-124-4085
NSN 5998-01-038-6814
NSN 2925-01-255-6394
NSN 6135-01-200-5144
NSN 6645-00-715-1531
NSN 5855-01-333-9606
NSN 6610-01-141-4960
NSN 7035-01-102-3788
NSN 6620-01-481-1358
NSN 5999-00-683-6660
NSN 5920-00-224-1634
NSN 5915-01-570-1782