Owner manual

I. DESCRIPTION AND SCOPE
Models 148D and 148R are multi-spring, single
acting, spring opposed, rotary ac tu a tors used with
Cashco rotary control valves. Re gard less of fi nal
installed fail ure action, the ac tu a tor is always pres-
surized on “top” of the traveling diaphragm plate.
Cashco has adopted a convention as follows in
identifying its rotary actuators:
“D” = Direct Action = ATC-FO Action
“R” = Reverse Action = ATO-FC Action
Model 148 actuator is fi eld reversible by arrange-
ment of actuator with respect to valve stem and with
respect to valve plug/disc orientation. Some dis as-
sem bly is required, but no new parts are required.
Reference the technical bulletin of the valve body
these actuators are unitized with for operating/
installation/se lec tion specifi cations; i.e. available
bench settings, strokes, etc.
MODEL 148
SPRING/DIAPHRAGM ROTARY ACTUATOR
INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM)
IOM-148
12-13
SECTION I
Figure 1
Model 148 Actuator
SECTION II
II. MODEL NUMBERING
The basic Model Number identifi es the actuator size and action. To identify a unique Model Number, another series
of 2-character modifi ers is added to the basic number. This number will identify which basic valve body the actuator
may be used on and which set of range springs is utilized. See Table 1.
1 4 8 R - 0 1
Basic Model No.
Modifi er
Valve
Product
Modifi er
Series No.
Ranger QCT -00 through -09
Premier EZO -00 through -09
Premier Unlined -00 through -09
148 in
2
size
Reverse Action
(ATO-FC)