460-12, -15, & -16 Series
Fisher Controls
Instruction Manual
480 Series Actuators
(-12, -15, CL -16 Types)
(jiiiiq
September 1974 Form 5034
Type Numbers and Combinations
Type 480 Pneumatically operated piston actuator with
integral Type 3570 or 3570C valve positioner.
Type 481 Pneumatically or hydraulically operated piston
actuator without positioner for on-off service. Tapped
cylinder cover provided for loading upper side of piston.
External switching valve must be provided.
Type 489 Hydraulically operated piston actuator with a
Type 3579 solenoid manifold in place of positioner.
Loading pressure is supplied and exhausted by electrically
operated solenoid valves. Travel is proportional to duration
of electrical impulse.
-12 Construction Size 20 piston actuator assembled with
universal mounting flange and integral clevis stem
connector. For mounting on Design U Spec 6 valves.
.15 Construction Size 20, 30, 40. or 60 piston actuator
assembled with universal mounting flange. A Type 480-15
is shown in figure 1.
-16 Construction - 8” stroke size 40. 60 or 80 piston
actuator assembled with universal mounting flange.
The table below lists actuator specifications.
Installation
Inspect this equipment on arrival to note any damage which
may have occurred in transit. If the actuator is attached to
a valve body when received, install the valve in the pipeline
with flow in the direction of the arrow on the body. Some
butterfly valves can be installed with flow in either
direction and are not marked as to proper flow direction.
If Fisher piston actuators are used to operate equipment
other than Fisher equipment, a suitable mounting plate and
Figure 1. Type 48015 Piston Actuator
appropriate linkage connection between the piston rod of
the actuator and connecting arm of the equipment must be
provided.
The size 20 actuators have four 318”-16 UNC tapped holes
on a 2.718” bolt circle in the cylinder flange (key 1, figures
5 and 6) for mounting. Sizes 30,40. and 60 actuators have
four holes tapped l/2”-13 UNC on a 3-718” bolt circle in
the cylinder flange. The cylinder flange of the size 80 Series
480.16 has four mounting holes tapped 314”-10 UNC on a
5112” bolt circle.
480-12, -15, & -16 Series
Actuator Specifications Table
481.12:
a"d
I
20
I
3112
I
8.5
I
150
I
2.118
*n- .^
I
I 480-16.
461.16, "0" and *c
t
40 20 30 I I 4.3/4 &l/8 3-l/2 I I 28.26 16.5 8.5 150
-2oi1.13
60 I 8-l/2 55.6 4-,/E
460.16, 40 El/8
28.25 8-l/8
481-16.
and
60
8-l/2 55.5 160 El/8
466.16
80 1 c-3/4 88.6 8.1/E
'On typer with a positioner, the cylinder pressure may be approximately 10% less than the supply prwure.
Pressure Connections
NOW
Supply pressure air or gas should be clean and
dry, as well as non-corrosive. Use of a Fisher
Type 254 filter is recommended.
can adversely affect the operation of the positioner. If the
valve is installed with the actuator below the pipeline,
provide a new vent location in the lowest part of the case
by removing the 114” NPT cadmium plated pipe plug and
installing a 318” NPT pipe plug into the standard vent hole.
The vent also serves as a drain to prevent accumulation of
condensate.
-
Types 480.12.480-15. and 480.16
A Type 3570 or 3570C positioner is an integral part of
Type 480 combinations. Two l/4” NPT connections on the
positoner labeled “Supply” and “Instrument” remain to be
made after valve installaion.
While the pmitioner and actuafor can function with a
minimum supply pressure of 35 psig, at least 50 psig is
recommended when used on any high-friction valve.
Actuator performance will improve with increased supply
pressure up to the 150 psig maximum rating of the
actuator.
[CAUTION 1
Linkage strength may limit maximum allowable
actuator supply pressure on any given
installation.
Types 481.12.481-15, and 481.16
The Type 481 actuator combinations have a cylinder cover
(key 31. figure 61 with a 114” NPT tapping for loading on
top of the piston. A 114” NPT tapping near the
cylinder/cylinder flange joint is for supplying pressure to
the bottom of the piston. An external switching device
must be provided to direct supply pressure to one side or
the other of the piston while exhausting the opposite side.
Types 489-12.489-15, and 489.16
The Type 489 combinations, utilizing a Type 3579 solenoid
manifold (see figure 2) instead of a positioner, require 114”
NPT supply pressure piping. The exhaust port is also tapped
114” NPT for piping back to the hydraulic reservoir. The
conduit connections are tapped l/2” NPT. Refer to figures
2 and 3 for wiring requirements.
The positioner case should always be vented to prevent
The top of the cylinder is loaded directly through the
pressure buildup. !f the vent must be piped fo a remote manifold base when the solenoid valves so dictate. The
location use large diameter tubing and make as short and necessary tubing fo load the bottom of the cylinder is _
straight a run as practical. Excessive vent line pressure drop assembled at the factory.
2
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