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 5925-01-356-0445
NSN 5835-01-647-6426
NSN 5855-00-058-1293
NSN 5895-00-827-7420
NSN 5945-00-705-4976
NSN 5905-01-056-6566
NSN 5925-00-181-4158
NSN 5990-00-902-4230
NSN 5835-00-606-7042
NSN 6220-00-483-7207
NSN 5915-00-709-0068
NSN 2925-01-423-4962