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 5895-01-362-5841
NSN 6685-01-101-9005
NSN 5930-00-492-0590
NSN 6220-01-527-5231
NSN 7035-00-079-7189
NSN 5999-00-031-4529
NSN 5975-01-123-9111
NSN 6620-01-391-7331
NSN 5855-00-944-0949
NSN 6645-01-645-2767
NSN 7035-00-529-3128
NSN 6645-00-881-9978