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 6240-01-039-4241
NSN 5975-01-104-5589
NSN 5920-00-082-8331
NSN 5905-01-534-0784
NSN 7035-01-236-5743
NSN 5996-00-811-8120
NSN 4140-00-826-9031
NSN 5945-01-048-9774
NSN 6620-00-811-7614
NSN 6620-00-727-8043
NSN 5835-01-116-2369
NSN 5915-00-818-6300