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.
Classification: Check valves of steel
NSN 5915-00-584-3512
NSN 5930-00-787-1290
NSN 6685-01-434-8906
NSN 6220-01-167-1805
NSN 5996-00-726-0507
NSN 6610-01-537-0816
NSN 6685-01-438-1113
NSN 6610-01-368-8344
NSN 5985-01-010-3853
NSN 2925-00-604-7487
NSN 5930-00-115-8570
NSN 5985-01-383-1954