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4.
Once the vane is level, turn the Hex Head Bolt inward until it firmly contacts the Lever.
5.
Holding the Hex Head Bolt with a wrench (so that it does not move), tighten Lock Nut against the
Housing to lock the Hex Head Bolt in place.
6.
Move the vane out of the seat area and then back into the seat to confirm that the adjustment leveled the
vane.
Section 5.5.3 – Vane Level Adjustment Procedure for 48” thru 72” BFVs
M&H does not manufacture a traveling nut operator for valves this size. Third-party worm gears
are normally provided for valves of this size. For maintenance and adjustment procedures for
these types of operators, please contact the manufacturer of the gear.
