DeZURIK
Willamette VMC-2200 Cone Valves
D12002
Page 8
February 2015
Closed Stop Adjustment
The Willamette VMC-2200 cone valve is a metal seated valve. Once the seats make contact,
additional travel in the closed position is not possible. The closed stop is set at the factory in the
optimal position and should not be adjusted unless long term component wear or component
replacement requires it. The closed stop can be adjusted externally adjusted. If the valve is fitted with
limit switches, adjustment of the switches may be required after the closed stop is adjusted.
1.
The closed stop cannot be adjusted when the valve is in the closed position. Actuate valve to
an intermediate or open position.
2.
After the valve has been moved to either an intermediate or open position, power down,
disconnect, and/or lockout any electric, hydraulic or pneumatic power to prevent accidental
operation of the actuator during the adjustment.
Accidental operation of power actuator can cause personal injury or equipment
damage. Disconnect and lock out power to actuator before servicing.
3.
Loosen the locknut on the closed stop
4.
Turning the stop counter clockwise “backs off” the stop and allows the valve to close further, if
possible. Turning the stop clockwise moves in the stop and decreased the travel of the valve. It
is good practice to rotate the stop in ¼ turn increments.
5.
After adjustments have been made, tighten the locknut.
6.
Actuate the valve to the closed position to check if the valve is seated properly. If not, repeat
process until the valve is properly seated.