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 6685-01-207-8176
NSN 6685-01-168-8391
NSN 5996-01-202-1392
NSN 6320-01-082-2970
NSN 5945-01-226-8335
NSN 6650-00-809-1817
NSN 6610-01-398-8092
NSN 6110-01-230-2637
NSN 5895-01-054-3799
NSN 6620-01-519-7234
NSN 6105-00-097-9965
NSN 5915-00-142-6912