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 5996-01-237-3757
NSN 6320-01-160-7757
NSN 6220-01-536-8165
NSN 4140-00-222-2186
NSN 5998-00-817-4133
NSN 5925-00-076-0120
NSN 5925-01-080-2484
NSN 6610-01-567-7242
NSN 5975-01-399-8564
NSN 2925-00-795-4063
NSN 6645-00-527-7258
NSN 6685-01-271-2934