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 6610-01-391-6781
NSN 6240-01-339-5100
NSN 5915-00-269-4463
NSN 5855-01-530-4147
NSN 6220-01-620-7073
NSN 7035-01-227-7492
NSN 5990-01-388-0252
NSN 5905-01-337-5936
NSN 5985-01-519-2637
NSN 5925-00-823-2909
NSN 5999-01-017-2377
NSN 6240-01-367-1925