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 5998-00-356-1995
NSN 6110-00-253-9523
NSN 6685-00-234-4283
NSN 5925-00-415-2286
NSN 5920-01-218-3885
NSN 5905-01-111-9094
NSN 5920-00-115-9738
NSN 6620-01-310-6653
NSN 5905-01-325-8838
NSN 5965-00-338-4259
NSN 5920-01-474-5404
NSN 6145-01-239-9491