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 5960-01-244-1591
NSN 7035-01-145-5059
NSN 6150-00-295-0785
NSN 7035-00-541-8516
NSN 6130-00-186-8460
NSN 5960-01-509-8779
NSN 5945-00-870-4052
NSN 5950-00-846-8722
NSN 2925-01-268-5464
NSN 5975-01-544-8830
NSN 5910-00-263-3630
NSN 6240-01-008-5267