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 5910-01-593-9114
NSN 5835-00-170-5238
NSN 6685-01-374-5573
NSN 6110-01-555-8410
NSN 5855-00-763-2155
NSN 5990-00-621-7457
NSN 5945-00-962-1036
NSN 5915-01-231-9174
NSN 5905-01-338-5506
NSN 5855-00-252-5743
NSN 6320-00-823-2015
NSN 6645-01-538-5041