CVS 1051 Series User manual

Head Office
3900 – 101 Street
Edmonton, Alberta, Canada T6E 0A5
Office: [phone]
Fax: [phone]
Website: www.cvs-controls.com E-Mail: [e-mail]
CVS Series 1051/1052
Rotary Actuator
Sizes 30 - 70
All CVS Controls actuators are to be installed and
maintained in accordance with instructions supplied
by CVS Controls.
This manual includes information on installing,
maintaining and adjusting the CVS Series 1051
Actuator, sizes 30 to 60, and Series 1052, sizes 40-
70.For information on other equipment used with
these actuators, consult the appropriate manuals.
Introduction
The CVS Series 1051/1052 Diaphragm Rotary
Actuator is a pneumatic spring-return actuator
designed for use with rotary-shaft control valves.
This is a direct-acting actuator, and an increase in
the loading pressure extends the diaphragm rod out
of the spring barrel. The CVS Type 1051/1052
Actuator is suitable for on-off service, or for
throttling service when used with a valve positioner.
The Series 1052 Actuator includes a spring
adjuster, which is suitable for use with or without a
positioner.
The stroking time is dependent on the actuator size,
rotation, spring rate, initial spring compression and
supply pressure. If the stroking time is critical for
your application, consult CVS Controls Ltd. for
proper settings.
The travel indicator is a combination graduated disk
and pointer located on the actuator end of the valve
shaft. Fixed travel stops are an available option.
Refer to Table 1 for additional specifications for the
CVS Series 1051/1052 Actuator. Additional
information specific to the actuator as shipped from
the factory are stamped on the nameplate
(Figure 2) installed on the actuator.
Instruction Manual
CVS Series 1051 Actuator
Installation
When the actuator and the valve are shipped
together from CVS Controls Ltd., the actuator is
usually mounted onto the valve. Refer to the valve
body instruction when installing the valve into the
pipeline, and then follow the instructions in the
Loading Connections portion of this manual.
If the actuator has been shipped separately, or if it is
necessary to mount the actuator onto the valve, refer
to procedures in the Actuator Mounting portion of this
manual.
Calgary Sales Office
3516 114 Avenue SE
Calgary, Alberta, Canada T2Z 3V6
Office: [phone]
Fax: [phone]
CVS Series 1052 Actuator
1

Installation continued,
Warning: Exceeding the diaphragm casing
limits can cause pressure-retaining parts to
burst and may cause personal injury or
property damage. Do not exceed the limits
outlined in Table 1. Use pressure-limiting or
pressure-relieving devices to prevent the
diaphragm casing pressure from exceeding
these limits.
Actuator Mounting
Follow these instructions when connecting a valve
body and an actuator that have been ordered
separately. Refer to Figures 7 and 8 for Key
Numbers.
1. Remove cap screws and washers (Keys 8 and
9), and then remove cover (Key 41).
2. Refer to Figures 3 and 4 for mounting styles and
positions. Normally the actuator is positioned
vertically with the valve in a horizontal pipeline.
3. Slide the mounting yoke (Figure 8, Key 35) over
the valve shaft and use the valve mounting cap
screws to secure it to the valve.
4. For other valve types refer to the instruction
manual for that valve body and use bolting
torques for these cap screws.
Caution: Refer to Table 3 for proper actuator
bolt torque requirements. Exceeding the
torque requirement may impair the safe
operation of the actuator.
Table 1: CVS Series 1051/1052 Actuator Specifications
Operating Principle
Direct Acting
Actuator Sizes
1051: 30, 40, 60
1052: 40, 60, 70
Maximum Diaphragm
Sizing Pressure
Size 30
80 psig (5.5 bar)
Maximum Diaphragm
Casing Pressure
Size 30
Size 40
65 psig (4.5 bar)
Size 40
75 psig (5.2 bar)
Size 60
40 psig (2.8 bar)
Size 60
50 psig (3.4 bar)
Size 70
55 psig (3.8 bar)
Size 70
65 psig (4.5 bar)
Maximum Valve Shaft Rotation
90 degrees with optional fixed stops
Acceptable Valve
Shaft Diameters
In. (mm)
Size 30
1/2” (12.7 mm), 5/8” (15.9 mm), 3/4” (19.1 mm)
Size 40
1/2” (12.7 mm), 5/8” (15.9 mm), 3/4” (19.1 mm), 7/8” (22.2 mm),
1” (25.4 mm), 1-1/4” (31.8 mm)
Size 60
3/4” (19.1 mm), 7/8” (22.2 mm), 1” (25.4 mm), 1-1/4” (31.8 mm), 1-1/2” (38.1 mm)
1-3/4” (44.5 mm) or 2” (50.8 mm)
Size 70
1-1/4” (31.8 mm), 1-1/2” (38.1 mm), 1-3/4” (44.5 mm), or 2” (50.8 mm)
Material Temperature
Capabilities
Nitrile
Diaphragm
-40 to 180oF (-40 to 82oC)
Pressure Connections
1/4” NPT Female
Mounting Positions
See Figures 3 and 4
Approximate Weights
See Table 2
Additional Specifications
Refer to the Parts List for casing pressure ranges and material identification
5. Screw the left-hand threaded locknut (Key 18)
onto the diaphragm rod (Key 22) as far as
possible.
6. Screw the turnbuckle (Key 16) as far as it will go
onto the actuator rod.
7. Screw the locknut (Key 14) onto the rod end
bearing (Key 13) and thread this assembly fully
into the turnbuckle (Key 16).
8. If the lever is attached to the rod end bearing,
remove the cap screw and hex nut (Keys 12 and
31)
9. Refer to the proper valve body instruction
manual for lever/valve shaft orientation marks
and slide the lever into place. (See Figure 5)
Clamp with the cap screw (Key 10).
10. Turn the lever (Key 33) to align with the rod end
bearing (Key 13). To facilitate this connection
move the actuator off its up travel stop with a
regulated air source and slightly adjust the
turnbuckle (Key 16).
Table 2: Approximate Actuator Weights
Series 1051
Size
Cast Iron
Construction
1
Aluminum
Construction
2
Lb
Kg
Lb
Kg
30
65
29
55
25
40
94
43
86
39
60
197
89
175
79
Series 1052
40
99
45
60
203
92
70
272
123
1. Cast iron spring barrel and housing
2. Sizes 30, 40 and 60: aluminum spring barrel, housing and
housing cover.
2

Installation continued,
11. Apply thread locking compound to the threads of
the cap screw (Key 12).
12. Connect the lever (Key 33), and rod end bearing
(Key 13) with the cap screw and hex nut (Keys
12 and 31).
Note: Refer to Table 3 for the recommended
bolt torque and tighten the cap screw as
indicated.
13. Note the valve position and direction of rotation
and position the travel indicator (Key 38)
accordingly.
14. Position the travel indicator (Key 38) according
to the valve position noted in #13. Replace the
cover (Key 41), securing with washers (Key 9)
and cap screws (Key 8). If the holes in the cover
and housing (Key 17) do not align properly,
temporarily loosen the cap screws (Key 32) and
shift the housing slightly. Do not stroke the
actuator while the cover has been removed.
15. Refer to the instructions in the Adjustment
section of this manual and properly adjust the
actuator turnbuckle before proceeding to the
Loading Connection portion of installation.
Figure 2: Nameplate on CVS 1051 Actuator
Table 3: Recommended Bolting Torques
Key #
Actuator Size
30
40
60
Ft-Lb
N•m
Ft-Lb
N•m
Ft-Lb
N•m
44
15
20
15
20
15
20
2 & 43
30
41
30
41
30
41
24
25
34
25
34
75
102
14
10
14
25
34
45
61
12
16
22
60
81
120
163
42
7
9
7
9
16
22
32
25
34
25
34
60
81
10
25
34
60
81
120
163
8
25
34
25
34
60
81
5
7
9
7
9
7
9
18
35
47
75
102
120
163
Figure 3: Mounting Styles and Positions for CVS Type 1051 Actuator
Mounting Action1
CVS Design V100
Valve
Right-Hand
PDTC
A
PDTO
B
Left-Hand
PDTC
C
PDTO
D
1. PDTC: Push-Down-To-Close; PDTO: Push-Down-To-Open
3

Figure 4: CVS Type 1051 Actuator-Valve Mounting
Loading Connection
1. Connect the loading pressure piping to the
pressure connection in the top of the diaphragm
casing. Run either 1/4-inch pipe or 3/8-inch
tubing between the 1/4-inch pressure connection
and the instrument.
2. Keep the length of pipe or tubing as short as
possible to avoid transmission lag in the control
signal. Should a volume booster or valve
positioner be used, ensure that it is properly
connected to the factory. If a valve positioner is
part of the assembly, the connection will likely be
made at the CVS Controls factory.
3. When the control valve has been completely
installed and connected, check for correct action
(air-to-open or air-to-close) according to the
controlling instrument. Ensure proper operation
by checking that the actuator stem and valve
shaft are moving freely in response to the
loading pressure change on the diaphragm.
INLET
INLET
INLET
INLET
INLET
INLET
INLET
INLET
4

Figure 5: Lever Operating Clearance
Turnbuckle Adjustment
Warning: The sudden release of process
fluid can cause personal injury or property
damage. Prior to starting adjustment
procedures:
•Isolate the valve from the process,
•Release the process pressure, and
•Vent the actuator loading pressure.
Correct turnbuckle adjustment ensures the valve is
correctly closed when the actuator is against its
travel stops. Refer to Figure 7 for Key Numbers.
For accurate adjustment to the zero-degree valve
ball position, remove the valve from the pipeline.
Refer to instructions in the appropriate valve body
instruction manual.
A regulated air supply will be required to stroke the
actuator. Consult Table 4 for the sizes of the three
open-end wrenches required for the procedure.
Note: To achieve the most accurate
adjustment of the actuator, do not remove
the cover during this procedure (Key 41).
Table 4: Wrench Sizes Required for
Turnbuckle Adjustment, In
Actuator
Size
Turnbuckle
(Key 16)
Lower
Locknut
(Key 14)
Upper
Locknut
(Key 18)
30
15/16
1/2
7/8
40
1-1/8
3/4
1-1/8
60
1-5/16
15/16
1-5/16
1. Remove the access plate (Key 11) and machine
screws (Key 29) if included.
2. Loosen the lower locknut (Key 14).
3. Ensure that there are no tools or instruments
within the actuator housing and blocking the
stroke path. Add pressure to the diaphragm
casing to stroke the actuator down and provide
access to the left-hand threaded upper locknut
(Key 18). Loosen the locknut.
4. Use one of the following according to the service
required by the actuator:
a. Push-Down-To-Close: Slowly stroke the
actuator to the down travel stop. Determine
the closed position of the valve according to
the appropriate valve body manual. Adjust
the turnbuckle until the valve is in the closed
position and lock this adjustment with the
left-hand threaded locknut (Key 18). Stroke
the actuator to the mid-travel position and
tighten the locknut (Key 16).
b. Push-Down-To-Open: Determine the
closed position of the valve according to the
appropriate valve body manual. Release all
pressure from the diaphragm casing and
ensure that the diaphragm is against its up
travel stop. Check the valve position and
stroke the actuator so the turnbuckle (Key
16) is accessible through the access
opening. Adjust the linkage, release
pressure to the actuator and check the new
adjustment. Continue this procedure until the
valve is in the closed position when the
actuator is resting on its up travel stop.
Tighten the locknut (Key 14), stroke the
actuator and tighten the left-hand threaded
locknut (Key 18).
5. Replace the access plate (Key 11).
6. Loosen the self-tapping screws (Key 7), adjust
the travel indicator (Key 38) and retighten the
self-tapping screws.
5

Principle of Operation
As the loading pressure is increased on top of the
diaphragm the diaphragm rod moves down. As the
loading pressure is decreased, the diaphragm rod is
forced upward by the spring.
The spring and diaphragm have been selected to
fulfill the requirements of the application. When in
service the actuator should produce full travel of the
valve with the diaphragm pressure as indicated on
the nameplate (Figure 2)
For principle of operation of the actuator with a valve
positioner, refer to the separate positioner manual.
Maintenance
Actuator parts are subject to wear and tear which
requires inspection and replacement as necessary
according to the severity of service conditions. The
following instructions outline adjustment,
disassembly and reassembly of parts. Refer to
Figures 7 & 8 for Key Numbers.
Warning: The sudden release of process
fluid can cause personal injury or property
damage. Prior to starting adjustment
procedures:
•Isolate the valve from the process,
•Release the process pressure, and
•Vent the actuator loading pressure.
Disassembly
The CVS Type 1051 Actuator can be completely
disassembled by following these procedures. When
inspecting or repairing the actuator, perform only
those steps necessary. Under normal conditions,
the cap screws (Keys 2, 42 and 43) should not be
removed.
Note: Cap screw (Key 12) must be
disengaged from the lever (Key 33) prior to
removing the diaphragm casing (Key 26).
Failure to do so will allow the spring
compression to rotate the valve beyond its
fully open or closed position. This could
cause damage to the valve seal.
1. Bypass the control valve, relieve all loading
pressure and remove the tubing or piping from
the top of the actuator.
2. If the control valve assembly includes a valve
positioner, remove it from the assembly.
3. Remove the cap screws and washers (Keys 8
and 9) as well as the cover (Key 41).
4. Remove the retaining ring and then the hub
(Keys 36 and 30) from the cover.
5. Inspect the bushing (Key 40). If replacement is
necessary, remove the travel indicator scale
(Key 39) by first unscrewing the self-tapping
screws (Key 37).
6. Remove the cap screw and hex nut (Keys 12
and 31).
7. Note the orientation of the lever/valve shaft, and
then loosen the cap screw (Key 10).
Note: Avoid using a hammer to drive the
lever (Key 33) off of the valve shaft. On some
valve types this could cause the valve ball
and bearings to move from their centered
position, causing damage to valve parts
during operation.
If using a tool is necessary, use a wheel
puller to remove the lever. Tapping the wheel
puller screw lightly to loosen the lever is
permissible, but hitting the screw with
excessive force could also cause damage to
valve parts or disrupt the positioning of the
valve ball and bearings.
Warning: Before proceeding further, remove
the cap screws and relieve the spring
compression. Failure to do so may cause
personal injury if the compressed spring
force suddenly thrusts the upper diaphragm
casing away from the actuator.
8. Loosen but do not remove the casing cap screws
(Key 45). Ensure that all spring force in the
upper diaphragm casing has been relieved.
Unscrew and remove the cap screws and hex
nuts (Keys 45 and 44) then remove the upper
diaphragm casing and the diaphragm (Key 25).
9. Refer to the warning on the CVS Controls
nameplate (Key 27) located on the diaphragm
plate (Key 1).
10. Remove the diaphragm plate (Key 1) and the
attached parts from the actuator. The following
parts will be attached to the diaphragm head:
spring (Key 21), diaphragm rod (Key 22), cap
screw (Key 24), spring seat (Key 19), hex nut
(Key18), turnbuckle (Key 16), hex nut (Key 14)
and rod end bearing (Key 13).
6

Disassembly continued,
Warning: The diaphragm plate (Key 1) may
be lodged against the diaphragm rod (Key
22), preventing the spring compression from
being relieved as the cap screw (Key 24) is
being loosened. If this is the case, loosen the
cap screw (Key 24) one full turn, and then tap
the underside of the diaphragm head until it
follows the cap screw disassembly. Failure
to check for and rectify this situation prior to
removing the cap screw (Key 24) could cause
a sudden release of spring compression as
the cap screw is disengaged. This sudden
release could result in personal injury or
property damage.
11. Slowly remove the cap screw (Key 24) while
ensuring that the diaphragm head is following
the cap screw disassembly. The spring load will
be zero before the cap screw is completely
removed. The remaining parts of the assembly
can then be separated.
12. Unscrew the cap screws (Key 32) and remove
the actuator housing assembly (Key 17).
13. Unbolt the mounting yoke (Key 35) from the
valve body.
14. Push out the bushing (Key 34) from the
mounting yoke and examine for wear. Replace if
necessary.
Assembly
These instructions assume that the actuator was
completely disassembled. If the actuator was only
partially assembled, start the instructions at the
appropriate step. Refer to Figures 7 & 8 for Key
Numbers.
1. If the bushing (Key 34) was replaced, press in
the new bushing and ensure the end of the
bushing is flush with the bottom of the recess in
the mounting yoke (Key 35).
2. Slide the mounting yoke (Key 35) over the valve
shaft and secure it to the valve using the valve
mounting cap screws. Refer to Table 3 and to
the appropriate valve manual for bolting torques
on these cap screws.
Note: Exceeding the torque requirement may
result in unsafe operation of the actuator.
Refer to Table 3 for recommended bolting
torques.
3. Consult Figures 3 and 4 for the desired housing
orientation. Secure the housing to the yoke
using cap screws (Key 32).
4. Coat the thread of the cap screw (Key 24) as
well as the tapered end of the diaphragm rod
(Key 22) with an appropriate lubricant.
5. Assemble the following parts: diaphragm rod
(Key 22), spring seat (Key 19), spring (Key 21)
and diaphragm plate (Key 1), then secure with
the cap screw (Key 24). Tightening the cap
screw will compress the spring. Ensure that the
tapered end of the diaphragm rod is seated in
the corresponding hole in the diaphragm plate,
that the spring is seated in the spring seat, and
that the cap screw is tightened to the torque
specified in Table 3.
6. Install the hex nut (Key 18), turnbuckle (Key 16),
hex nut (Key 14) and rod end bearing (Key 13)
onto the diaphragm rod.
7. Ensure the travel stops (Key 43) are located as
shown in Figure 6.
8. Install the diaphragm plate and attached parts
into the actuator.
Figure 6: Travel Stop Orientation
7

Assembly continued,
9. Ensure that the warning nameplate (Key 27) is in
place and install the diaphragm (Key 25) and the
upper diaphragm casing (Key 26).
10. Install the cap screws and hex nuts (Keys 45 and
44). Tighten cap screws evenly using a
crisscross pattern to compress the spring, and
then secure the upper diaphragm casing.
11. Refer to the appropriate valve body instruction
manual for lever/valve shaft orientation marks,
and slide the lever (Key 33) into place. See
Figure 5 for correct lever operating clearance.
Clamp with the cap screw (Key 10).
12. Rotate the lever (Key 33) until it aligns with the
rod end bearing (Key 13). This connection can
be assisted by stroking the actuator off its up
travel stop using a regulated air source.
13. Apply a thread-locking compound to the threads
of the cap screw (Key 12).
14. Connect the lever (Key 33) and the rod end
bearing (Key 13) with the cap screw and hex
nuts (Keys 12 and 31). Tighten the cap screw to
the torque as recommended in Table 3).
15. If a valve positioner is being used with the
assembly, consult the appropriate manual for
positioner installation.
16. Coat the bearing surfaces of the hub (Key 30)
and the cover (Key 41) with a suitable lubricant.
Install the bushing (Key 40) and hub into the
cover and secure with the retaining ring (Key
36).
17. Install the travel indicator scale (Key 39) and
secure with self-tapping screws (Key 37).
18. Make note of the valve position and direction of
rotation and position the travel indicator (Key 38)
accordingly.
19. Replace the cover (Key 41) and secure with cap
screws and washers (Keys 8 and 9). If the holes
in the cover and housing (Key 17) do not align,
use a regulated air source to move the actuator
slightly off its up travel stop. If this does not
result in proper alignment, temporarily loosen the
cap screws (Key 32) and shift the housing
slightly. Do not stroke the actuator while the
cover is off.
20. Refer to the Adjustment section of this manual
for correct actuator turnbuckle adjustment.
Changing Actuator Mounting
Generally the actuator is positioned vertically in a
horizontal pipeline, however there are four possible
mounting styles and for possible positions for each
style. Refer to Figures 3 and 4. *The size 70 Series 1052
must be externally supported if mounted horizontally due to the
weight.
Correct lever/valve shaft positioning is important in
ensuring proper valve action. Refer to the
appropriate valve body instruction manual.
Warning: The sudden release of process
fluid can cause personal injury or property
damage. Prior to starting adjustment
procedures:
•Isolate the valve from the process,
•Release the process pressure, and
•Vent the actuator loading pressure.
Style A is right-hand mounted and Style D is left-
hand mounted. In all other ways Styles A and D are
identical.
Style B is right-hand mounted, while Style C is left-
hand mounted. In all other ways Styles B and C are
identical.
Refer to the following procedure to convert from
Styles A and D to Styles B and C or vice versa, or to
change the mounting position. Key numbers refer to
Figures 7 & 8.
1. Remove the cover (Key 41) by unscrewing and
removing the cap screws and washers (Keys 8
and 9).
2. Unscrew cap screw (Key 12) and loosen cap
screw (Key 10).
Warning: Do not use a hammer to drive the lever
off the drive shaft. This could cause damage to
internal valve parts. On some valves, driving the
lever could move the valve ball and bearings away
from the centered position, resulting in damage to
valve parts as the valve is operated.
If using a tool to remove the lever is necessary,
use a wheel puller. Tapping the wheel puller
screw lightly to loosen the lever is permissible,
but excessive force could also result in damage to
valve parts and disruption of the centered position
of the valve disk and bearings.
3. If changing styles,
a. Remove the cap screws (Key 32) and the
actuator housing (Key 17) from the mounting
yoke (Key 35).
b. Rotate the housing 180 degrees while
maintaining the appropriate position (1, 2, 3
or 4) and place the actuator onto the
mounting yoke (Key 35).
4. If changing positions, remove cap screws (Key
32) and rotate the actuator housing to the
desired position.
8

Changing Actuator Mounting cont’d.
Note: Consult Table 3 for appropriate bolt
torques.
5. Secure the actuator housing (Key 17) to the
mounting yoke (Key 35) with cap screws (Key
32).
6. Refer to the appropriate valve body instruction
manual for lever/valve shaft orientation marks
and slide the lever into place. Consult Figure 5
for lever operating clearance. Clamp with the
cap screw (Key 10).
7. Rotate the lever (Key 33) to align with the rod
end bearing (Key 13). This connection can be
aided by stroking the actuator slightly off its up
travel stop with a regulated air source.
8. Apply thread locking compound to the threads of
the cap screw (Key 12).
9. Connect the lever (Key 33) and the rod end
bearing (Key 13) using the cap screw and hex
nuts (Keys 12 and 31). This connection can be
aided by stroking the actuator slightly off its up
travel stop with a regulated air source.
Note: Tighten cap screw (Key 12) to the
recommended bolt torque shown in Table 3.
10. Position the travel indicator (Key 38) according
to the valve position and direction of rotation.
11. Replace the cover (Key 41) and secure it with
cap screws and washers (Keys 8 and 9). ). If
the holes in the cover and housing (Key 17) do
not align, use a regulated air source to move the
actuator slightly off its up travel stop. If this does
not result in proper alignment, temporarily loosen
the cap screws (Key 32) and shift the housing
slightly. Do not stroke the actuator while the
cover is off.
12. Refer to the Adjustment section of this manual
for correct actuator turnbuckle adjustment.
Parts Ordering
The serial number for your CVS Series 1051/1052
Rotary Actuator is located on the nameplate (Figure
2 and Key 3, Figure 7). Please refer to your serial
number when corresponding with your CVS Controls
representative. When ordering replacement parts,
please refer to the following parts list.
Figure 7: Typical CVS Type 1051
Actuator Assembly
9

CVS Type 1051 Rotary Actuator
Parts List
Key
No.
Description Part Number
Key
No.
Description Part Number
1 Diaphragm Plate,
cast iron
Size 30
CVS2F649319042
12 Cap Screw, pl
steel
Size 30
CVS1A553424052
Size 40
CVS2V939919042
Size 40
CVS1A361524052
Size 60
CVS20A1336X012
Size 60
CVS12A9519X012
2 Cap Screw, pl steel
Size 30 & 40
(4 req’d)
CVS1A368424052 13
Rod End
Bearing,
steel/TFE
Size 30
CVS1R580299012
Size 40
CVS1E561699012
Size 60
(6 req’d)
Size 60
CVS1R440899012
14 Hex Nut,
zn pl steel
Size 30
CVS1A946324122
3
Nameplate, stainless steel
CVS16A3188X012
Size 40
CVS1E353724122
4
Drive Screw, stainless steel (4 req’d)
CVS1A368228982
Size 60
CVS1A354024122
5
Cap Screw, pl steel (4 req’d)
(Not required with positioner)
CVS1C275224052 16 Turnbuckle,
zn pl steel
Size 30
CVS12A9623X012
Size 40
CVS22A9625X012
6
Cover Plate, steel
(Not required with positioner)
CVS22A9359X012
Size 60
CVS22A9624X012
17
Housing,
aluminum
Size 30
CVS46A0463X022
7 Cap Screw, pl steel (2 req’d) CVS1B561528982
Size 40
CVS42A9306X062
Size 60
CVS42A9309X062
8
Cap Screw,
zn pl steel
Size 30 & 40
CVS1A336924052
Housing,
cast iron
Size 30
CVS48A5247X012
Size 60
CVS1A340924052
Size 40
CVS48A5245X012
9 Washer, zn pl steel
Size 30 & 40
CVS1H723125072
Size 60
CVS48A5246X012
Size 60
CVS1A518925072
18 Hex Nut,
zn pl steel
Size 30 CVS12A9666X012
10 Cap Screw, pl steel
Size 30
CVS1A353124052
Size 40
CVS1A340924052
Size 40 CVS12A9629X012
Size 60
CVS12A9405X012
11
Access Plate, steel
(For aluminum constructions only)
CVS12A9638X012 Size 60 CVS1R438924122
Access Plate, polyester
(For aluminum constructions only)
CVS38A4712X012 19 Spring Seat, steel See Following Table
Figure 8: Typical CVS Type 1051
Actuator Assembly cont’d
10

CVS Type 1051 Rotary Actuator
Parts List
Key
No.
Description Part Number
Key
No.
Description Part Number
20
Spring Barrel,
aluminum
Size 40
CVS32A9325X012
35
Mounting Yoke
See Following Table
Size 60
CVS42A9327X012
36
Retaining Ring,
zn pl steel
Size 30 & 40
CVS12A9409X012
Spring Barrel, cast
iron
Size 40
CVS32A9325X022
Size 60
CVS12A9455X012
Size 60
CVS42A9327X022
37
Self Tapping Screw, steel
(2 req’d)
CVS1B561528982
21
Spring
See Following Table
22 Diaphragm Rod, pl
steel
Size 30
CVS12A9652X042
38
Travel Indicator,
SST
Size 30 & 40
CVS28A8534X012
Size 40
CVS12A9652X022
Size 60
CVS28A8495X012
Size 60
CVS12A9462X032
39
Travel Indicator
Scale, SST
Size 30 & 40
CVS28A8533X012
23
Lower Diaphragm
Casing,
zn pl steel
Size 30
CVS2E792225062
Size 60
CVS28A8492X012
Size 40
CVS2E806325062
40
Bushing,
fiberglass
Size 30 & 40
CVS12A9373X012
Size 60
CVS2E847425062
Size 60
CVS12A9374X012
24 Cap Screw, steel
Size 30
CVS12A9459X012
41
Cover,
aluminum
Size 30 & 40
CVS32A9533X012
Size 40
CVS12A9460X012
Size 60
CVS32A9532X012
Size 60
CVS12A9461X012
Cover, cast iron
Size 30 & 40
CVS32A9311X012
25 Diaphragm, Nitrile
Size 30
CVS2E791902202
Size 60
CVS32A9313X012
Size 40
CVS2E670002202
42
Cap Screw,
pl steel (4 req’d)
Size 40
CVS1A352624052
Size 60
CVS2E859702202
Size 60
CVS1A418624052
26
Upper Diaphragm
Casing,
zn pl steel
Size 30
CVS2J713828992
43
Travel Stop, steel, Size 30
CVS15A8382X012
Size 40
CVS2L441828992
Travel Stop, steel, Size 40
CVS1H591724092
Size 60
CVS30A0055X012
Travel Stop, steel, Size 60
CVS16A4120X012
27
Warning Nameplate (not
shown)
CVS12A9530X012 44 Hex Nut,
zn pl steel
Size 30 (12 req’d)
CVS1A346524122
Size 40 (16 req’d)
29
Machine Screw, pl steel, 4 req’d
(Aluminum constructions only,
not shown)
CVS1A340828992
Size 60 (24 req’d)
45 Cap Screw,
pl steel
Size 30 (12 req’d)
CSV1A675124052
Size 40 (16 req’d)
28 Seal, steel &
synthetic rubber
Size 30
& 40
CVS12A9451X012
Size 60 (24 req’d)
46
Travel Indicator, SST (not shown)
CVS12A9693X012
Size 60
CVS12A9452X012
47
Machine Screw, pl steel
(not shown)
CVS1C899028982
30
Hub
See Following Table
31 Hex Nut, pl steel
Size 30
CVS1A352724122
48
Travel Indicator Disc, steel
(not shown)
CVS22A9699X012
Size 40
CVS1A341224122
Size 60
CVS1A343324122
76
Lubricant
(Not Supplied)
32 Cap Screw,
pl steel (4 req’d)
Size 30 &
40
CVS1A336924052
77
Sealant
(Not Supplied)
Size 60
CVS1A340924052
33
Lever, ductile iron
See Following Table
34
Bushing
See Following Table
Key 19 Spring Seat
Key 21 Spring
Casing
Pressure1
(PSIG)
Torque Output
(In.-Lb)
Casing
Pressure1
(BAR)
Torque Output
(N

m)
Key 19
Spring Seat (steel)
Key 21
Spring (steel)
90oRotation
60oRotation
90oRotation
60oRotation
Up2
Down2
Up2
Down2
Up2
Down2
Up2
Down2
Actuator Size 30
0-18
180
210
180
480
0-1.2
20
24
20
54
CVS12A9445X012
CVS1K509827032
---
---
250
180
---
---
28
20
CVS12A9445X012
CVS1N751527032
0-33
180
560
180
1530
0-2.3
20
63
20
173
CVS12A9445X012
CVS1K509827032
250
700
250
1220
28
79
28
138
CVS12A9445X012
CVS1N751527032
Actuator Size 40
0-18
---
---
650
570
0-1.2
---
---
73
64
CVS12A9447X012
CVS1P637127082
440
600
440
1320
50
68
50
149
CVS12A9447X012
CVS1L217427042
0-33
630
1800
630
3180
0-2.3
71
203
71
359
CVS12A9447X012
CVS1P637127082
830
560
830
1880
94
63
94
212
CVS12A9446X012
CVS1L217327042
Actuator Size 60
0-18
1580
1330
1580
3220
0-1.2
179
150
179
364
CVS12A9450X012
CVS1K162727082
0-33
1310
2830
1310
6810
0-2.3
148
320
148
769
CVS12A9448X012
CVS1K162827082
1580
3960
1580
4320
179
447
179
488
CVS12A9450X012
CVS1K162727082
2330
2030
2330
5490
263
229
263
620
CVS12A9449X012
CVS1K162827082
0-40
2330
4380
2330
8780
0-2.8
263
495
263
992
CVS12A9449X012
CVS1K162827082
1. Positioner supply pressure should be 10 percent higher than actuator casing pressure
2. Up: diaphragm rod fully retracted; Down: diaphragm rod fully extended
11

CVS Type 1051 Rotary Actuator
Parts List
Key 34 Bushing, TFE
Key 35 Yoke-Bushing Assembly1
Actuator
Size
Valve Shaft
Diameter
Key 34
Bushing, TFE
Key 35
Yoke-Bushing
Assembly
Cast Iron & TFE
In mm
30
1/2
12.7
CVS1U902599402
CVS12A9779X0A2
40
3/4
19.1
CVS12A9556X012
CVS12A9799X0C2
7/8
22.2
CVS12A9557X012
CVS12A9799X0E2
60
1
25.4
CVS12A9775X012
CVS12A9799X0H2
1-1/4
31.8
CVS12A9558X012
CVS12A9799X0J2
1-1/2
38.1
CVS12A9559X012
CVS12A9799X0K2
1. Yokes are available only as yoke-bushing assemblies. Bushing is available separately as a
replacement part.
Key 30 Hub, Aluminum or 416 sst
Actuator
Size
Valve Shaft
Diameter
Key 30 Hub
In mm
30
1/2
12.7
CVS22A9496X012
40
3/4
19.1
CVS22A9497X012
7/8
22.2
CVS22A9486X012
60
1
25.4
CVS22A9420X012
1-1/4
31.8
CVS22A9500X012
1-1/2
38.1
CVS22A9501X012
Key 33 Lever, Ductile Iron
Actuator
Size
Valve Shaft
Diameter
Key 33 Lever
In mm
30
1/2
12.7
CVS32A9579X012
40
3/4
19.1
CVS32A9569X012
7/8
22.2
CVS32A9570X012
60
1
25.4
CVS32A9590X012
1-1/4
31.8
CVS32A9591X012
1-1/2
38.1
CVS32A9592X012
CVS Type 1051 Actuator Sizes
V100 Valve
Body Size
Valve Stem
Connection
CVS Type 1051
Actuator Size
In mm
2”
1/2
12.7
30
3”
3/4
19.1
40
4”
7/8
22.2
6”
1
25.4
60
8”
1-1/4
31.8
10”
1-1/4
31.8
12”
1-1/2
38.1
CVS Series 1051 Size 40
12

CVS Series 1052 Size 40 Assembly
13

Series 1052 Size 40 Assembly – Parts List
14

Series 1052 Size 60 Assembly
15

CVS Series 1052 Size 60 Assembly – Parts List
16

CVS Series 1052 Size 70 Assembly
17

CVS Series 1052 Size 70 Assembly – Parts List
18

CVS Series 1051/1052 Dimensional Data – inches
19

Head Office
3900 101 Street
Edmonton, Alberta
T6E 0A5
Canada
Office: [phone]
Fax: [phone]
Calgary Sales Office
3516 114 Avenue SE
Calgary, Alberta
T2Z 3V6
Canada
Office: [phone]
Fax: [phone]
Website: www.cvs-controls.com Email: [e-mail]
May 2014
CVS Controls Ltd. strives for the highest levels of quality and accuracy. The information included in this publication is
presented for informational purposes only. CVS Controls Ltd. reserves the right to modify or change, and improve design,
process, and specifications without written notice. Under no circumstance is the information contained to be interpreted to
be a guarantee/warranty with regard to our products or services, applicability or use.
Selection, use and maintenance are the sole responsibility of the end user and purchaser. CVS Controls assumes no
liability for the selection use and maintenance of any product.
20