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.
NSN 6620-01-535-6925
NSN 5920-01-333-2376
NSN 5996-00-503-3378
NSN 4140-01-023-8846
NSN 6645-00-772-0532
NSN 6620-00-699-5537
NSN 5945-01-118-5871
NSN 5950-00-900-2775
NSN 6150-00-699-2569
NSN 5990-00-882-9162
NSN 6145-01-515-9871
NSN 6620-01-478-7549