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 5915-00-275-0329
NSN 7035-01-244-9179
NSN 5998-00-318-8130
NSN 5985-00-361-8863
NSN 7035-00-919-3381
NSN 6685-00-141-4300
NSN 6645-01-106-4303
NSN 6105-01-595-6209
NSN 6135-01-454-7041
NSN 5915-01-411-5355
NSN 5999-01-094-6563
NSN 5999-01-302-0075