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 6645-01-100-3296
NSN 6610-00-190-3684
NSN 2925-00-642-8854
NSN 6620-01-361-8685
NSN 5835-01-363-4527
NSN 5985-01-057-1876
NSN 4140-00-038-4276
NSN 5999-00-068-4591
NSN 5835-00-190-3401
NSN 5950-00-888-1217
NSN 5990-00-481-7208
NSN 5965-01-660-4105