12 M Motor Actuators
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Y20EBD Valve Linkage for M100 Motor Actuators
Valve
Bushing
Yoke Nut
Packing Nut
Jam Nut
Y20D1-10
Figure 10: Mounting Yoke
2. Place the yoke on the valve over the stem and bonnet.
3. Select the proper bushing and slide it over the bonnet and into the
yoke hole.
1.015
25.78
1.078
27.38
Y20D1-11
Figure 11: Bushings
Note: Two bushings are provided:
• large hole--1.078 in. (27.38 mm) inside diameter which is
identified by a smooth outer edge
• small hole--1.015 inch (25.78 mm) inside diameter which is
identified by a groove on its outer edge
In general, valves up to two inch pipe size have 1/4 inch stems and use
the large hole (no groove) bushing; valves larger than two inch pipe
size have 3/8 inch stems and use the small hole bushing (with groove).
4. Install the yoke nut. For valve bodies 2-1/2 inch and larger, use the
yoke nut furnished with the valve. Fasten the yoke in place securely
by tightening the yoke nut with a wrench 1/8 turn past finger tight.
5. If the packing nut was removed, reinstall and tighten it. For valves
with U-Cup packing, tighten the nut 1/8 turn past “finger tight.” For
all other valves, tighten finger tight.
Note: JCI valves have U-Cup packing.
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