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 6240-01-574-0261
NSN 5998-00-237-1937
NSN 6320-01-054-3046
NSN 6145-01-592-3297
NSN 6220-01-555-8332
NSN 5990-01-541-7671
NSN 6685-01-445-6201
NSN 5895-00-952-1703
NSN 4140-00-313-2358
NSN 6220-00-291-3722
NSN 5965-00-581-9978
NSN 5920-01-455-5524