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 6685-01-587-9375
NSN 4140-01-337-0495
NSN 6645-01-269-8377
NSN 6320-01-441-2438
NSN 5925-01-588-7668
NSN 5996-00-642-9832
NSN 6220-01-423-9491
NSN 6145-00-938-6085
NSN 5910-00-306-5980
NSN 5920-01-494-8295
NSN 6620-00-175-0663
NSN 5998-00-871-6272