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 6685-01-047-2811
NSN 6240-00-975-0868
NSN 5999-01-272-0018
NSN 6320-01-397-0399
NSN 6220-01-256-6400
NSN 6135-01-462-1135
NSN 6110-00-731-9754
NSN 6145-00-064-8612
NSN 6610-01-531-9505
NSN 5915-01-250-3364
NSN 6130-00-969-5804
NSN 7035-00-155-9513