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 2925-01-537-7625
NSN 6620-00-801-8885
NSN 6110-00-253-9523
NSN 6685-01-540-5245
NSN 5996-00-978-9705
NSN 5895-01-103-1982
NSN 5998-00-269-5444
NSN 5996-01-555-5314
NSN 5915-01-549-4257
NSN 5925-01-177-7423
NSN 5920-01-157-9471
NSN 6145-01-454-0225