A rigid item varied in size and shape. It is normally located on the bottom of a valve. It must have drilled and/or tapped holes for mounting purposes.
NSN 5996-01-076-2938
NSN 5855-01-243-2355
NSN 5998-01-595-5177
NSN 5999-01-050-0115
NSN 5925-01-182-3286
NSN 6645-00-443-8011
NSN 5910-01-199-0256
NSN 5855-00-055-1579
NSN 6105-01-392-4290
NSN 5945-01-415-8149
NSN 5950-00-910-7148
NSN 7035-01-352-0766