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 6610-01-224-7247
NSN 6220-00-253-4952
NSN 4140-01-352-2924
NSN 5855-01-330-3669
NSN 5998-00-120-2221
NSN 5998-01-342-8496
NSN 6130-01-475-0358
NSN 6320-01-458-1853
NSN 5925-00-849-2767
NSN 5945-01-071-5231
NSN 5990-01-442-3520
NSN 5930-01-420-6529