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 6610-01-552-2151
NSN 7035-00-946-2642
NSN 6320-01-029-4220
NSN 6220-01-568-2671
NSN 5998-01-524-6026
NSN 5920-00-970-8419
NSN 5895-01-140-6008
NSN 6130-00-310-2644
NSN 5975-01-059-2377
NSN 5855-01-138-4985
NSN 5855-01-658-4510
NSN 5935-01-447-3280