Figure 1. Fisher Control-Disk™ Valve with
2052 Actuator and DVC6200 Digital Valve Controller
W9425-2
Scope of Manual
This instruction manual includes installation, adjustment, operation, maintenance, and parts information for the
Fisher 2052 diaphragm rotary actuator (figure 1). Instructions for the control valve, positioner, manual actuator, and
other accessories are included in separate manuals.
Do not install, operate, or maintain a 2052 actuator without being fully trained and qualified in valve, actuator, and
accessory installation, operation and maintenance. To avoid personal injury or property damage, it is important to
carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If you
have any questions about these instructions, contact your Emerson Process Management sales office before
proceeding.
Description
2052 spring-and-diaphragm rotary actuators are used on rotary-shaft valve bodies for throttling or on-off applications.
The 2052 may be used for on-off service without a positioner, or it may be used for throttling service with a positioner,
depending on service conditions. The 2052 has an ISO 5211 mating interface that allows installation to non-Fisher
valves. Refer to separate bulletins for valve and positioner information.
www.Fisher.com
2052 Actuator
November 2011
Instruction Manual
D103296X012
A top-mounted handwheel option is available for infrequent service as a manual actuator. For repeated or daily manual
operation, the unit shouldbe equipped with a side-mounted declutchable 1078 manual actuator. Externally adjustable
travel stops are used to limit the degree of rotation at both ends of the actuator stroke.
The lever for the 2052 actuator is supported by bushings. The lever may be changed to accommodate valve bodies
with different size valve shafts.
Table 1. Fisher 2052 Actuator Specifications
Specifications
Actuator Mounting Connections
Actuator SizesSee table 2
Operating Pressure
Maximum Diaphragm Casing PressureSize1,2,and3Actuators:5barg(73psig)
Pressure ConnectionSee table 4
Torque OutputSee table 3
Actuator Temperature Capabilities
OperationField reversible between PDTC and PDTO; right- and left-hand mounting, any angle of orientation
Size 1:22.2 kg (49 lb)
Size 2:54.4 kg (120 lb)
Size 3:113 kg (250 lb)
Top-mounted handwheel: Optional on Size 1 and 2 actuators only
Declutchable handwheel: Optional on Size 1, 2, and 3 actuators
Table 2. Actuator and Shaft Size Availability
SHAFT SIZEACTUATOR SIZE
Inches123
1/2availablenot availablenot available
5/8availableavailablenot available
3/4availableavailableavailable
1not availableavailableavailable
1-1/4not availableavailableavailable
1-1/2not availablenot availableavailable
1-3/4not availablenot availableavailable
2not availablenot availableavailable
Table 4. Pressure Connections
ACTUATOR
SIZE
1standardoptional
2standardoptional
3
1/4 NPT1/2 NPT3/4 NPTG1/4
not
available
PRESSURE CONNECTION
not
available
not
available
standardoptional
optional
optional
not
available
Table 3. Torque versus Actuator Size
OPERATING PRESSURE
ACTUATOR
SIZE AND
ACTION
1(PDTO,PDTC)25.522651.2453
2(PDTO,PDTC)1059302101860
3(PDTO)32728906315583
3(PDTC)28024795845173
1. Operating pressure up to3 barg (44 psig) is allowablefor single spring construc
tion.
2. Operating pressure up to5 barg (73 psig) is allowable for dual spring construction.
2barg(29psig)
TorqueTorque
NSmlbfSinNSmlbfSin
(1)
4barg(58psig)
(2)
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Instruction Manual
D103296X012
Table 5. Fisher 2052 Actuator Mounting Styles
VALVE SERIES OR DESIGNVALVE SERIES OR DESIGN
MOUNTINGACTION
Right-Hand
Left-Hand
Left-Hand
(Optional)
1. PDTC–Push-down-to-clo se, and PDTO–Push-down-to-open.
2. A left hand mountedball will be required for the NPS 3 through 12 Vee-BallSeries B and the NPS 14 and 16, with or without attenuator.
(2)
(1)
PDTC
PDTO
PDTC
PDTO
PDTC
PDTO
Figure 2. Fisher 2052 Actuator Mounting Styles
BALL/PLUG
ROTATION TO
CLOSE
CCW
CCW
CCW
CCW
CW
CW
V150, V200 & V300
A
B
D
C
C
D
CV500
V500
A
B
D
C
NA
NA
DISK/BALL
ROTATION TO
CLOSE
CW
CW
CW
CW
NA
NA
2052 Actuator
November 2011
A11, 8510B, 8532,
8560, 8580,
9500, and
Control-Disk
Valve
B
A
C
D
NA
NA
LEFT HAND MOUNTING
STYLE D SHOWN
STYLE D
4
2
3
POSITION 1
STANDARD
4
STYLE C
3
RIGHT HAND MOUNTING
VALVE
INLET
2
FLOW
VALVE
INLET
FLOW
STYLE A
4
STYLE B SHOWN
STYLE B
POSITION 1
STANDARD
2
3
4
2
3
GE37285-B
Specifications
Specifications are shown in table 1 for 2052 actuators. Specifications for actuator operation are stamped on a metal
nameplate attached to the actuator.
3
2052 Actuator
November 2011
Instruction Manual
D103296X012
Table 6. Bolting Torque Requirements
DESCRIPTION KEY NUMBER
Rod End Bearing Clamping Bolt
Torque , Key 16
End Plate to Housing Bolt
Torque, Key 4
Diaphragm Plate to Rod Bolt
Torque, Key 7
Casing Bolt Torque, Key 8
Housing to Yoke Bolt Torque,
Key 28
Lever-Spline Clamping Bolt
Torque, Key 15
Optional Lockout Kit Mounting
Bolt Torque,Key 53
1. Exceeding any torque requirements could damage the actuator andimpair safe operation.
ACTUATOR
SIZE
(1)
NSmLbfSft
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
180
400
120
210
115
300
245
115
175
340
Installation
38
68
27
55
55
55
27
68
38
NA
88
TORQUE
28
130
295
50
90
155
20
85
220
40
40
40
20
50
180
28
85
130
NA
65
250
FASTENER LUBRICATION
None
None
Anti-Seize Lubricant
None
None
None
None
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations.
Check with your process or safety engineer for any other hazards that may be present from exposure to process media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
CAUTION
To avoid parts damage, do not apply pressure that exceeds the Maximum Diaphragm Casing Pressure in table 1.
Use pressure-limiting or pressure-relieving devices to prevent the Operating Pressure from exceeding the values shown in
table 3.
The actuator, as it comes from the factory, is normally mounted on a valve body. If the actuator is shipped separately
or if it is necessary to mount the actuator on the valve, perform the procedures presented in the Actuator Mounting
section. Follow the procedures given in the valve instruction manual when installing the control valve in the pipeline.
If a positioner is ordered with the actuator, the pressure connection to the actuator is normally made at the factory. If
it is necessary to make this connection, run tubing of the appropriate size for the diaphragm casing pressure
connection (reference table 4) between the pressure connection and the instrument. Keep the length of tubing or
pipe as short as possible to avoid transmission lag in the control signal.
When the control valve is completely installed and connected to the controlling instrument, check to make sure that
the action is correct (air-to-open or air-to-close) and that the controlling instrument is properly configured for the
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Instruction Manual
D103296X012
2052 Actuator
November 2011
desired action. For successful operation, the diaphragm rod assembly, lever, and valve shaft must move freely in
response to changes in the loading pressure on the diaphragm.
Actuator Mounting
WARNING
Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. Before performing
any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve. Drain the process media from both sides of the valve.
D Safely vent the power actuator loading pressure.
D Uselock-outprocedurestobesurethattheabovemeasures stay in effect while you work on the equipment.
D The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings.
D Check with your process or safety engineer for any hazards that may be present from exposure to process media.
Use the following steps to mount the actuator or to change actuator mounting style or position.
Unless otherwise specified, key numbers referenced in the following procedures are shown in figure 7 for the 2052
actuator.
If the Actuator is mounted on a valve body and it is necessary to change mounting style or position, the actuator must
first be separated from the valve body.
1. Isolate the valve body from the process. Release process pressure and vent all actuator pressure.
2. Remove the cover or plug (key 2).
WARNING
To avoid personal injury and equipment damage from moving parts, keep fingers and tools clear while stroking the
actuator with the cover removed.
3. Loosen the cap screw (key 15).
4. Separate the actuator from the valve body by removing the cap screws and nuts which secure the valve to the
mounting yoke (key 27). Proceed to step 5.
If the actuator is not mounted on a valve body ensure the up and down travel stops (see figure 3) are adjusted
correctly to achieve the desired actuator rotation. Use the travel indicator (key 21) and travel scale (key 19) as
reference.
Note
Once each travel stop is properly positioned, adequately tighten the hex nut (key 24) to lock the travel stop in place.
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2052 Actuator
November 2011
Instruction Manual
D103296X012
5. Refer to figure 2 and table 5 for available mounting styles and positions. The actuator is normallypositioned
vertically with the valve in a horizontal pipeline.
6. Determine whether the actuator mounting yoke (key 27) will be mounted on the end plate assembly (key 3) side or
on the actuator housing boss side of the actuator. If the desired mounting position and style require moving the
mounting yoke (key 27) and travel indicator components to opposite sides of the actuator, remove the machine
screws (keys 20 and 22), the travel indicator scale (key 19), and the travel indicator (key 21). Remove the cap screws
(key 28) and the mounting yoke (key 27). Install the mounting yoke in the desired position (on the end plate
assembly or on the actuator housing boss). Tighten the mounting cap screws to the torque specified in table 6.
Install the travel indicator components on the opposite side of the actuator.
WARNING
To avoid personal injury or property damage, ensure the travel indicator is installed correctly to coincide with the desired
actuator action. Refer to figure 3 for more information.
Figure 3. Fisher 2052 Actuator Travel Stops and Travel Indication
INDICATOR
ORIENTATION
FOR PDTO
TRAVEL INDICATOR
SCALE
INDICATOR
ORIENTATION
FOR PDTC
VIEW A
KEY 22
DOWN
TRAVEL
STOP
UP
TRAVEL
STOP
KEY 20
TRAVEL
INDICATOR
VIEW A
7. Before sliding the valve shaft into the lever, position the valve ball or disk as follows:
For push-down-to-close action, the valve ball or disk should be in the fully open position.
For push-down-to-open action, the valve ball or disk should be in the fully closed position (see the valve body
instruction manual).
8. Make sure that the index markings on the valve shaft are properly aligned with either the markings on the lever or
thetravelindicatorscalemountingholes.Slidethevalveshaftintothelever.(Seefigure4foronepossible
orientation.) Install the valve mounting cap screws and nuts. Tighten to the torque value given in the appropriate
valve body instruction manual.
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