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 6650-00-364-7866
NSN 6645-01-597-2222
NSN 6620-01-151-2288
NSN 5895-01-519-9269
NSN 5920-01-509-3550
NSN 2925-00-275-1807
NSN 5985-01-169-2145
NSN 6135-01-100-3593
NSN 2925-01-442-7812
NSN 6150-01-026-0913
NSN 5915-01-058-4150
NSN 6220-01-127-8761