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 5855-00-763-2155
NSN 6650-01-122-6734
NSN 6320-00-731-6134
NSN 6610-00-093-4178
NSN 6620-01-163-3329
NSN 6220-00-061-8076
NSN 6110-01-204-0000
NSN 2925-00-261-5800
NSN 7035-01-406-5232
NSN 5945-01-414-9825
NSN 5930-00-363-6599
NSN 5985-00-357-1348