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 5935-00-554-4124
NSN 6610-00-506-1977
NSN 5996-00-974-9583
NSN 6320-00-004-9158
NSN 2925-00-275-1807
NSN 5855-01-254-4557
NSN 4140-00-430-5155
NSN 5996-00-864-9450
NSN 2925-01-218-5556
NSN 5985-01-463-9112
NSN 5975-01-400-4204
NSN 6650-00-140-8776