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 5965-01-488-6695
NSN 5945-01-541-4827
NSN 2925-00-698-4882
NSN 5985-01-076-5094
NSN 6130-00-382-7735
NSN 5998-01-371-4601
NSN 6240-01-270-5998
NSN 6685-01-615-5834
NSN 6135-01-061-1862
NSN 5960-01-182-3676
NSN 5945-00-372-3586
NSN 5965-01-043-9357