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 5950-01-550-5579
NSN 5945-01-381-8196
NSN 5985-00-116-1944
NSN 6610-01-471-2017
NSN 2925-00-574-8796
NSN 6240-01-152-2662
NSN 6240-00-972-0904
NSN 5835-01-383-1313
NSN 5990-00-108-5400
NSN 6320-01-141-3791
NSN 5965-01-625-3982
NSN 5996-01-130-2992