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 5895-00-420-4097
NSN 6145-01-598-9912
NSN 6240-01-088-0389
NSN 7035-01-343-6010
NSN 6145-01-498-0113
NSN 5920-01-570-3321
NSN 5999-01-457-2873
NSN 6610-00-097-5176
NSN 6240-00-594-7138
NSN 7035-01-386-3004
NSN 5925-01-411-6028
NSN 6220-00-111-3188