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 materials other than copper, iron or steel
NSN 6105-01-375-9993
NSN 5915-01-076-5754
NSN 4140-01-096-5058
NSN 5935-01-121-0421
NSN 2925-01-206-2250
NSN 5950-01-495-0873
NSN 5990-01-157-0441
NSN 5835-00-400-5056
NSN 5925-01-181-8983
NSN 6150-01-604-5119
NSN 5998-01-286-2884
NSN 7035-00-890-7649