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 5998-01-474-0531
NSN 7035-01-126-6023
NSN 6240-01-425-1545
NSN 5945-01-543-2664
NSN 5835-01-456-3922
NSN 5998-00-262-1694
NSN 5910-01-296-7534
NSN 5915-01-019-6003
NSN 6685-00-138-2739
NSN 5835-00-838-0707
NSN 6110-00-471-9423
NSN 6685-00-080-7119