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 6150-01-212-1687
NSN 5925-00-840-4149
NSN 6105-01-622-9572
NSN 5925-01-139-3866
NSN 5945-01-092-3180
NSN 6320-01-090-8296
NSN 6105-01-564-9958
NSN 6150-01-358-1464
NSN 5999-01-442-1526
NSN 6240-01-238-4973
NSN 5905-01-238-2896
NSN 4140-01-160-7699