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 5895-00-170-4568
NSN 5950-00-951-0534
NSN 5998-01-401-5396
NSN 6610-00-361-6954
NSN 6145-00-935-5242
NSN 5950-01-542-9972
NSN 5855-00-361-0167
NSN 5905-01-271-5900
NSN 5915-00-336-1644
NSN 5999-00-234-2000
NSN 5905-00-175-7981
NSN 6150-00-160-7976