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 5920-01-418-1821
NSN 5930-00-978-4799
NSN 6220-00-515-6998
NSN 6135-01-440-9412
NSN 5915-00-843-4555
NSN 5930-01-174-8138
NSN 6645-01-087-7345
NSN 5965-01-330-6807
NSN 5975-01-434-2505
NSN 5925-01-281-9474
NSN 6150-01-470-2349
NSN 6105-01-614-8518