M Motor Actuators
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Y20EBD Valve Linkage for M100 Motor Actuators 3
lntroduction
The Y20EBD Valve Linkage converts the rotary motion of an M100
Series Motor Actuator to a linear movement in order to operate several
types of valves.
A rack and pinion drive mechanism provides the linear movement. The
rack assembly contains a spring that, when compressed by over travel, will
maintain valve close off to rated values. The pinion gear may be reversed
for manual operation with a 3/8 inch socket drive extension for service of
controlled equipment.
Table 1: Selection Table--Actuators and Linkages
Linkage
Number
Spring
Return
Actuator
Non-spring
Return
Actuator
Valve Seating Load, lb (n)
Y20EBD-1
M130 M120 75 (334) Green
Y20EBD-2
--- M140 150 (607) Yellow
Y20EBD-3
--- M150 270 (1201) Red
Y20EBD-5
M110 --- 40 (178) Orange
Y20EBD-6
M130 M120 100 (449)
Note: The Y20EBD linkage kit can be used on Barber-Colman
1-1/2 to 2 inch valves. Use the grooved adapter bushing provided
with the linkage kit for V-90 Series and the mid-bracket position.
Larger Barber-Colman valves can mount onto the Y20EBD yoke
directly; however, adding locally purchased large washers under
the linkage bracket to prevent paint damage is recommended.
A selection of models are available to adapt M100 Motor Actuators to
several types of valves.
A Y20EBD-4 linkage is available to enable an M150 Motor Actuator to
operate S91 auxiliary switches for automatic heating/cooling changeover
applications. The Y20EBD-4 allows additional over travel after valve
close off for switch operation. See Y20 Series Linkage Kits Product
Bulletin for a complete description.
Y20EBA valve linkage kits are available to adapt the M100 Series
Actuators to valves made by other manufacturers. See Y20 Series Linkage
Kits Product Bulletin for more information.
Refer to the technical bulletin provided with the motor actuator for
information on wiring the motor actuator and related adjustments.
Application
Details
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