A valve with a stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. In the second position, the valve disk is lifted from the seat to allow a flow of fluid in either direction through the valve. The valve disk may be spring loaded. See also valve, stop-check and valve, stop-lift-check.
NSN 6620-01-151-2288
NSN 5975-01-288-1059
NSN 5950-01-041-3045
NSN 5998-00-385-9007
NSN 4140-01-463-2114
NSN 5960-00-518-3091
NSN 6685-01-152-6003
NSN 5975-01-189-0604
NSN 6110-01-004-9870
NSN 5920-01-250-8793
NSN 5945-01-331-4122
NSN 7035-00-890-7649