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 5835-01-160-7282
NSN 6320-01-207-9038
NSN 5945-00-063-5882
NSN 5905-01-555-0047
NSN 6220-01-373-2778
NSN 6135-01-545-6582
NSN 6685-01-512-1602
NSN 5985-00-400-4661
NSN 5996-00-285-3727
NSN 5996-00-299-1609
NSN 5945-00-761-5953
NSN 6645-01-426-0206