8 M Motor Actuators
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Y20EBD Valve Linkage for M100 Motor Actuators
When configuring the yoke, two areas have to be considered:
• the distance the actuator will be from the valve (height)
• the direction of drive the actuator is going to provide to the valve
To determine the height:
Yoke
Mounting
Surface
Valve Stem
Full Up
Valve Stem
Full Up
Figure 3: Height Measurement
1. Raise the valve stem to its full up position.
2. Measure from the yoke mounting surface to the top of the stem.
Brackets
Yoke
High
Low
Medium
Y20A1-04
Figure 4: Linkage Bracket Positions
The linkage brackets can be mounted to the yoke in one of three positions:
low, medium, or high.
• Low position for stem lengths from 2 inches up to 3 inches
(50.8 to 76.2 mm) in full up position. Johnson brass valves up to
2 inch (50.8 mm) pipe size.
• Medium position for stem lengths from 3 inches to 4 inches
(76.2 to 101.6 mm) in full up position. Johnson iron valves from
2-1/2 inches (63.5 mm) pipe size and larger. V90BA valves up to
2 inch (50.8 mm) and V90CA valves up to 3 inch (76.2 mm) pipe
sizes.
Configuring Yoke
Height
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