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 6240-00-170-5302
NSN 6110-00-910-1314
NSN 5935-01-202-1863
NSN 5835-01-147-7526
NSN 6650-01-519-6198
NSN 5945-00-860-3490
NSN 5925-00-728-5217
NSN 5950-01-051-6081
NSN 6130-00-100-0175
NSN 2925-00-351-1015
NSN 5998-01-298-5903
NSN 6620-00-783-9560