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 5920-01-212-9504
NSN 5960-01-413-3877
NSN 5925-01-099-0974
NSN 5855-01-034-3845
NSN 5835-01-310-3846
NSN 5905-01-472-6831
NSN 7035-01-541-8029
NSN 6645-01-394-5149
NSN 6220-01-317-3283
NSN 6220-01-121-0850
NSN 7035-01-187-6002
NSN 5945-00-087-6701