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 5996-00-932-5301
NSN 5975-00-961-1416
NSN 6620-01-218-3542
NSN 6320-01-459-6992
NSN 6650-01-027-1181
NSN 5925-01-406-3490
NSN 5925-01-371-5282
NSN 5855-01-079-8716
NSN 2925-00-201-8247
NSN 6105-00-881-3080
NSN 6645-00-411-3733
NSN 5996-01-322-3927