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 6620-01-221-2643
NSN 5950-00-945-4903
NSN 6135-00-223-9563
NSN 7035-01-279-2815
NSN 7035-00-978-7837
NSN 6110-00-004-8883
NSN 5915-00-259-3772
NSN 2925-01-214-5333
NSN 5998-00-067-9514
NSN 5855-01-547-3875
NSN 6150-01-330-4840
NSN 5998-01-353-5014