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 5910-00-312-6621
NSN 5999-00-752-6501
NSN 6320-01-054-3046
NSN 6130-01-162-2310
NSN 4140-01-432-8771
NSN 6130-01-068-3362
NSN 6320-01-308-0009
NSN 6645-01-605-1485
NSN 5975-01-134-9084
NSN 5930-00-019-4673
NSN 2925-01-299-6967
NSN 6110-00-469-7981