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 6320-00-831-2227
NSN 7035-00-585-2113
NSN 5998-00-739-8930
NSN 5950-01-341-5722
NSN 5950-00-232-7377
NSN 6145-01-579-9714
NSN 5925-01-247-9388
NSN 5965-00-539-7778
NSN 6220-01-206-1945
NSN 6610-01-550-2368
NSN 2925-00-837-3948
NSN 4140-00-336-1728