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 5999-01-088-4430
NSN 4140-01-369-6471
NSN 6130-00-093-5863
NSN 6150-00-623-0420
NSN 6620-01-465-2496
NSN 5965-01-480-9229
NSN 6610-01-101-4723
NSN 6130-00-277-7321
NSN 6145-00-779-5352
NSN 6645-01-373-2262
NSN 5925-00-544-5980
NSN 5999-00-501-0703