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 4140-00-133-4162
NSN 5996-00-389-7404
NSN 5935-01-321-4028
NSN 6220-00-943-1948
NSN 5855-01-443-3970
NSN 5915-01-100-8523
NSN 6240-01-024-3917
NSN 5990-01-261-2962
NSN 5920-01-268-7258
NSN 6320-00-036-3688
NSN 6650-01-374-4923
NSN 4140-01-513-0379