Pilot operated
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 5998-01-501-5917
NSN 6130-00-828-9350
NSN 6645-00-928-7208
NSN 5996-01-491-6739
NSN 6145-01-293-0096
NSN 7035-01-347-1689
NSN 5930-00-789-8637
NSN 6110-01-321-3164
NSN 6650-01-217-9304
NSN 5975-00-612-1998
NSN 6150-00-310-5582
NSN 4140-01-592-5367