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 7035-01-434-3585
NSN 6645-00-876-4413
NSN 6685-01-213-5161
NSN 6320-01-247-0898
NSN 5910-00-144-4383
NSN 5945-01-423-1009
NSN 5920-01-619-4261
NSN 5925-01-293-8349
NSN 5975-00-880-8589
NSN 2925-00-960-4737
NSN 6645-00-547-4388
NSN 6135-01-292-7723