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 5920-01-423-8595
NSN 6320-01-484-7734
NSN 5985-01-004-1499
NSN 5990-00-226-7894
NSN 5945-01-649-2483
NSN 6110-01-238-5772
NSN 5935-01-340-4670
NSN 5915-01-046-9296
NSN 5975-00-107-4283
NSN 5960-00-442-9455
NSN 4140-01-458-2743
NSN 5930-01-010-7293