Elkhart Brass Copperhead 8593-IV - Manual (Page 4)

Warning:
When installing monitor on a raised face companion flange, it is critical that
bolts be tightened uniformly to prevent cocking of the monitor relative to the flange. If the monitor
becomes cocked, (see Figure 1) the monitor cast flange base will fracture and fail when the bolts on
the "high" side are tightened.
Figure 1
Improper Flange Installation