4 M Motor Actuators
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Y20EBD Valve Linkage for M100 Motor Actuators
The following terminology is used in these instructions:
CW--Clockwise refers to the direction of rotation of the actuator shaft as
seen from the load end.
Zero Position--The fully counterclockwise position of the actuator
shaft--the de-energized position of a spring return actuator.
Stem Up--The initial position of the stem is up before operating the valve.
Stem Down--The initial position of the stem is down before operating the
valve.
Push/Drive Down to Open--Pushing or driving the stem down opens
the valve.
Push/Drive Down to Close--Pushing or driving the stem down closes
the valve.
Pull/Drive Up to Open--Pulling or driving the stem up opens the valve.
Pull/Drive Up to Close--Pulling or driving the stem up closes the valve.
Stem Up/Drive Down--The stem is initially in the up position and the
motor actuator through the linkage will drive the stem down.
Stem Down/Drive Up--The stem is initially in the down position and the
motor actuator through the linkage will drive the stem up.
Three Way Mixing Valve--A valve with two inlets and one outlet. Valve
seats on both stem up and stem down travel.
Three Way Diverting Valve--A valve with one inlet and two outlets.
Valve seats on both stem up and stem down travel.
Glossary
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