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 5920-01-016-1141
NSN 5999-01-303-0853
NSN 5915-01-479-6403
NSN 5965-01-603-0118
NSN 5945-00-079-3461
NSN 5925-01-603-3372
NSN 5915-01-111-5450
NSN 5920-01-431-5567
NSN 6685-01-055-6057
NSN 5930-00-154-0347
NSN 5895-00-960-2153
NSN 6135-01-050-3194