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 5960-01-023-8037
NSN 5996-00-781-1429
NSN 5925-00-789-3718
NSN 6645-01-260-7426
NSN 6220-01-569-7259
NSN 5999-00-655-3867
NSN 6685-01-364-6307
NSN 5975-01-355-0392
NSN 6240-00-991-6929
NSN 6650-01-430-4126
NSN 5998-01-010-6135
NSN 6110-00-106-6587