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 5950-00-216-5912
NSN 6240-01-331-5246
NSN 6645-01-280-5395
NSN 5855-01-422-4720
NSN 5975-01-146-4796
NSN 6645-00-739-6718
NSN 6220-00-577-1986
NSN 6645-00-854-7505
NSN 6685-01-575-9039
NSN 5975-01-629-0227
NSN 5990-01-129-7701
NSN 6620-00-632-3631