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 5835-00-894-7374
NSN 5855-00-586-6255
NSN 7035-00-442-1869
NSN 6620-00-490-3978
NSN 6685-01-107-4571
NSN 2925-01-136-2551
NSN 6105-01-580-0557
NSN 5920-00-366-0111
NSN 6645-00-108-6479
NSN 6620-00-816-9755
NSN 6620-00-833-6786
NSN 5915-01-510-9763