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 5998-01-093-5473
NSN 6220-01-049-7204
NSN 2925-01-391-1540
NSN 6610-01-655-1559
NSN 5915-00-067-7464
NSN 6320-00-456-0836
NSN 5945-01-020-7897
NSN 5910-01-329-1725
NSN 5935-00-235-8949
NSN 2925-01-424-0235
NSN 5999-01-478-6885
NSN 5835-01-485-0210