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 5905-01-382-0542
NSN 6685-01-275-1242
NSN 6650-01-603-3183
NSN 6130-00-959-4181
NSN 6240-00-635-9953
NSN 6135-00-412-1687
NSN 5975-00-237-4297
NSN 6620-01-567-7456
NSN 5855-01-559-6431
NSN 5930-01-474-9002
NSN 5996-00-361-9901
NSN 5945-01-442-5565