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 4140-01-425-1725
NSN 5855-00-973-5717
NSN 6150-00-554-7591
NSN 5855-00-058-1293
NSN 6135-01-333-6737
NSN 5975-01-494-4043
NSN 5985-01-580-4636
NSN 6105-01-516-8000
NSN 5950-00-797-1784
NSN 5985-00-390-8837
NSN 5975-01-634-0678
NSN 5920-00-845-9676