A valve with a stem that may be mechanically actuated to three different positions by rotary or linear motion. In the first position, the valve disk is located and locked against the seat permitting no fluid flow through the valve. In the second 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 third 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, lift-check and valve, stop-check.
NSN 5925-01-514-2790
NSN 6645-01-319-0006
NSN 6135-01-399-6812
NSN 6130-01-129-5997
NSN 5895-00-516-9357
NSN 5965-01-503-5405
NSN 6240-01-447-4003
NSN 5965-01-240-0233
NSN 6130-01-482-9822
NSN 6610-01-535-0310
NSN 5835-01-351-8429
NSN 5930-00-216-7511