Emerson Process Management 1051, 1052 User Manual

Instruction Manual

Form 5587 November 2006

1051 & 1052 H & J

Types 1051 and 1052 Sizes 40, 60 and 70 Styles H and J Rotary Actuators

Contents

Introduction 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scope of Manual 3. . . . . . . . . . . . . . . . . . . . . . . . .

Description 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications 4. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Principle of Operation 4. . . . . . . . . . . . . . . . . . . . .

Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Actuator Mounting 4. . . . . . . . . . . . . . . . . . . . . . . .

Loading Connections 11. . . . . . . . . . . . . . . . . . . . .

Adjustment 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Type 1051 and 1052 Turnbuckle Adjustment 11

Type 1052 Spring Adjustment 12. . . . . . . . . . . . .

Initial Compression 12. . . . . . . . . . . . . . . . . . . . .

Stroking Range 13. . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disassembly 14. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Assembly 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Changing Actuator Mounting 18. . . . . . . . . . . . . . .

Changing Styles 18. . . . . . . . . . . . . . . . . . . . . . . . .

Changing Positions 19. . . . . . . . . . . . . . . . . . . . . .

Top-Mounted Handwheels and

Adjustable Travel Stops 21. . . . . . . . . . . . . . . . .

Handwheel and Travel Stop Operations 21. . . .

Handwheel and Travel Stop Maintenance 22. . . For Top-Mounted Handwheels and Adjustable

Up Travel Stops 22. . . . . . . . . . . . . . . . . . . . . . .

For Adjustable Down Travel Stops 23. . . . . . . . .

Parts Ordering 23. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts List 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

W4252 / IL

Figure 1. Type 1051 Actuator with H Mounting Adaptation

and Type 3610J Positioner

Note

Neither Emerson, Emerson Process

Management, nor any of their affiliated

entities assumes responsibility for the

selection, use and maintenance of any

product. Responsibility for the

selection, use, and maintenance of any

product remains with the purchaser

and end-user.

www.Fisher.com

W4139-1 / IL

Figure 2. Type 1052 Actuator with J Mounting Adaptation

D100320X012

1051 & 1052 H & J

ACTUATOR SIZE

Instruction Manual

Form 5587

November 2006

Table 1. Type 1051 and 1052 Actuator Specifications

Operation

Direct Acting: Increasing loading pressure

extends the diaphragm rod out of the spring barrel

Service:

Type 1051: For on-off or throttling service with positioner

Type 1052: For on-off or throttling service with or without a positioner

Actuator Sizes

Type 1051: 40, and 60 Type 1052: 40, 60, and 70

Maximum Diaphragm Sizing Pressure

(2)(3)

Size 40: 4.5 bar (65 psig) Size 60: 2.8 bar (40 psig) Size 70: 3.8 bar (55 psig)

Maximum Diaphragm Casing Pressure

(2)(3)

Size 40: 5.2 bar (75 psig) Size 60: 3.4 bar (50 psig) Size 70: 4.5 bar (65 psig)

Maximum Valve Shaft Rotation

90, 75, or 60 deg with optional stops

Stroking Time

Dependent on actuator size, rotation, spring rate, initial spring compression, and supply pressure. If stroking time is critical, consult your Emerson Process Managementt sales office

Material Temperature Capabilities

Nitrile Diaphragm or O-Rings

(3)

(1)

: –40 to 82_C

(–40 to 180_F)

Silicone Diaphragm: –40 to 149_C (–40 to 300_F)

Travel Indication

Graduated disc and pointer combination located on actuator end of valve shaft

Pressure Connections

1/4 in. NPT female

Mounting Positions

See figure 10

Approximate Weights

See table 7

Torque Limits (mm)

(4)

Limited by maximum diaphragm sizing pressure or tables 2 and 3, whichever is less

1. Nitrile O-rings are used in optional top-mounted handwheel, adjustable down travel stop, and adjustable up travel stop assemblies.

2. Use this value to determine the maximum torque output allowed.

3. The pressure / temperature limits in this manual and any applicable standard or code limitation for valve should not be exceeded.

4. Exceeding any torque requirements could damage the actuator and impair safe operation.

Table 2. Output Shaft Diameters and Torque Limits for Actuators With H Mounting

ACTUATOR SIZE

(1)

1. Type 1052 actuator only.

OUTPUT SHAFT DIAMETER

mm Inches

22.2

28.6

38.1

28.6

38.1

38.1 1-1/2 1210 10,680

7/8 1-1/8 1-1/2

1-1/8 1-1/2

Additional Specifications

For casing pressure ranges and for material identification of the parts, see the Parts List

NDm

240 468

1110

468

1210

TORQUE LIMIT FOR

H MOUNTING

Inch-Pounds

2120 4140 9815

4140

10,680

Instruction Manual

ACTUATOR SIZE

Form 5587 November 2006

Table 3. Acceptable Shaft Diameters and Torque Limits for Actuators With J Mounting

COUPLING AVAILABILITY BY KEYED SHAFT

ACTUATOR SIZE

(1)

1. Type 1052 actuator only.

2. Coupling supplied for mating with either 44.5 or 50.8 mm (1-3/4 or 2-inch) keyed shaft.

mm Inches

9.5

12.7

15.9

19.1

25.4

19.1

25.4

31.8

38.1

50.8

31.8

38.1

50.8

DIAMETER

3/8 1/2 5/8 3/4

3/4

1 1-1/4 1-1/2

1-1/4 1-1/2

(2)

1051 & 1052 H & J

TORQUE LIMIT FOR J MOUNTING

NDm

69 114 207 468

207 468

1030 1360 2650

Inch-Pounds

460

610 1010 1830 4140

1830 4140 9110

12,000 23,430

9110

12,000 23,430

Introduction

Scope of Manual

This manual provides installation, adjustment, operation, maintenance, and parts ordering information for the Type 1051 (sizes 40 and 60) and Type 1052 (sizes 40, 60, and 70) diaphragm rotary actuators with H and J mounting adaptations (see figures 1 and 2). Also, this instruction manual provides information for the optional top-mounted handwheel, and both the optional up and down travel stops. Instructions for the control valve body, the positioner, accessories, and other sizes or constructions of this actuator are covered in separate manuals.

Do not install, operate, or maintain a Type 1051 or 1052 actuator without first D being fully trained and qualified in valve, actuator, and accessory installation, operation, and maintenance, and D carefully reading and understanding the contents of this manual. If you have any questions about these instructions, contact your Emerson Process Management sales office before proceeding.

Description

The Type 1051 and 1052 diaphragm rotary actuators are pneumatic spring-return actuators for use with rotary-control valves and other equipment. The Type 1051 actuator can be used for on-off service, or it can be used for throttling service when equipped with a valve positioner. The Type 1052 actuator can be used for on-off service, or it can be used for throttling service when equipped with or without a

valve positioner. The Type 1052 actuator spring is adjustable.

The H mounting adaptation permits the actuator to be used with equipment other than Fisherr valve bodies. The mounting brackets and couplings for rotary actuation are user-provided. This mounting adaptation includes a flat-surface mounting plate that is drilled and tapped for attaching the user-provided bracket. Cap screws for attaching the bracket are provided. H mounting also includes an output shaft (with milled flats) to provide the Double D rotary output either directly or through a user-provided coupling. Output shaft diameters and torque limits are listed in table 2. Dimensional information for the mounting plate and output shaft are shown in figures 4, 5, and 6.

The J mounting adaptation permits the actuator to be used for rotary actuation of Fisher keyed-shaft

butterfly valve bodies and other keyed-shaft equipment. This mounting adaptation uses the

standard butterfly valve mounting bracket and provides an output shaft with an attached coupling for keyed equipment shafts. Coupling sizes and torque limits are listed in table 3. Dimensional information for the mounting bracket and stub shaft coupling is shown in figures 4, 5, and 7.

Additionally, a top-mounted handwheel can be applied for infrequent service as a manual handwheel actuator. For more frequent manual operation, a side-mounted handwheel actuator is available. Also, an adjustable up travel stop can be added to limit the actuator stroke in the upward direction, or an adjustable down travel stop can be added to limit actuator stroke in the downward direction.

1051 & 1052 H & J

ACTUATOR

Instruction Manual

Form 5587

November 2006

Specifications

Specifications are shown in table 1 for Type 1051 and 1052 actuators. Specifications for a given Type 1051 or 1052 actuator as it originally comes from the factory are stamped on a nameplate attached to the actuator.

Principle of Operation

The diaphragm rod moves down as loading pressure is increased on top of the diaphragm. As the loading pressure is decreased, the spring forces the diaphragm rod upward.

The spring and diaphragm have been selected to meet the requirements of the application and, in service, the actuator should produce full travel of the valve or other operated equipment with the diaphragm pressure as indicated on the nameplate.

Consult the separate positioner instruction manual for actuator principle of operation with positioner.

Installation

WARNING

Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal injury.

To avoid personal injury or property damage caused by bursting of pressure retaining parts, be certain the service conditions do not exceed the limits given in table 1. Use pressure limiting or pressure relieving devices to prevent the diaphragm sizing pressure from exceeding the maximum allowable diaphragm sizing pressure.

Check with your process or safety engineer for any additional measures that must be taken to protect against process media.

If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this instruction manual.

Top Mounted Handwheel

ACTUATOR

SIZE

40 281 11.06 356 14.00

60 359 14.12 432 17.00

(1)

1. Size 70 available in Type 1052 only.

Figure 3. Top Mounted Handwheel

mm Inch mm Inch

335 13.62 356 14.00

WARNING

To avoid personal injury or parts damage, do not use an operating pressure that exceeds the Maximum Diaphragm Casing Pressure (table 1) or produces a torque greater than the Maximum Allowable Valve Shaft Torque (see Catalog 14). Use pressure-limiting or pressure-relieving devices to prevent the diaphragm casing pressure from exceeding its limit.

Actuator Mounting

Use the following steps to connect the actuator to a valve body or other equipment. Unless otherwise specified, key numbers are shown in figures 12 and 13. Mounting dimensions are shown in figures 4, 5, 6, and 7.

Note

For an actuator with an H mounting adaptation and a 22.2 through 38.1 mm (7/8 through 1-1/2 inch) output shaft, find dimensions and center of gravity information in figures 3, 4, 5, 6, and 9,

Instruction Manual

Form 5587 November 2006

1051 & 1052 H & J

and approximate weights in table 7. This information is required for proper fabrication of the user-provided bracket and coupling.

1. For an actuator with an H mounting adaptation, attach an appropriate mounting bracket (not provided) to the mounting plate (key 22) with the cap screws (key 78). See figures 4, 5, and 6 for mounting dimensions on the mounting plate. Tighten the cap screws to the bolt torques listed in table 10.

2. Consult figure 10 for available mounting styles and positions. The actuator is normally positioned vertically with the valve body or other equipment in a horizontal pipeline.

Note

If the milled flats or the coupling on the end of the actuator output shaft (key 87) are oriented such that the output shaft cannot accommodate the operated equipment shaft, refer to the Changing Positions portion of the Changing Actuator Mounting section. This procedure describes how the output shaft can be repositioned to accommodate the operated equipment shaft.

3. If using an actuator with a J mounting adaptation, note that the valve shaft coupling (key 90) is furnished with two keyways lettered A and B as shown in figure 8 and 12 (letters C and D on the coupling are not used and can be disregarded). Align the appropriate keyway with the keyway in the operated equipment shaft. If using a Fisher butterfly valve, align the appropriate keyway on the coupling with the valve shaft keyway indicated in table 8. Then install the woodruff key (key 91) in the shaft keyseat, and slide the coupling onto the shaft. It is

helpful to apply a light coat of grease to the inside of the coupling before sliding it onto the shaft.

4. For an actuator with an H mounting adaptation, slide the actuator (with the user-provided mounting bracket attached) into the user-provided coupling on the operated shaft. Then, secure the actuator to the operated equipment in the desired mounting position with the appropriate fasteners, such as mounting cap screws. See figures 4, 5 and 6 for output shaft dimensions.

5. For an actuator with a J mounting adaptation, secure the mounting bracket (key 22) to the valve body with the cap screws (key 78, not shown). Tighten the cap screws to the bolt torques in table 10. For 31.8 and 38.1 mm (1-1/4 and 1-1/2 inch) valve shafts, also place the two spacers (key 92, not shown) between the mounting bracket and valve body during this step.

6. For an actuator with a J mounting adaptation and a 50.8 mm (2-inch) output shaft (key 87, figure 14), note that the valve shaft coupling (key 90, figure 14) is furnished with two keyways lettered A and B as shown in figure 8 (letters C and D on the coupling are not used and can be disregarded). Align the appropriate keyway with the keyway in the operated equipment shaft. Then, install the woodruff key (key 91, not shown in figure 14) in the shaft keyseat, and slide the coupling onto the shaft using the appropriate coupling keyway (see table 8 and figure 8). It is helpful to apply a light coat of grease to the inside of the coupling before sliding it onto the shaft. Secure the actuator (user-provided mounting bracket) to the operated equipment in the desired mounting position with the appropriate fasteners, such as mounting cap screws.

7. Follow the instructions given in the Turnbuckle Adjustment section before proceeding to the Loading Connection portion of this section.

1051 & 1052 H & J

ACTUATOR SIZE C

40 333 505 607 54 114 175 73

60 473 749 876 64 121 186 76

(1)

40 13.12 19.88 23.88 2.12 4.50 6.88 2.88

60 18.62 29.50 34.50 2.50 4.75 7.31 3.00

(1)

1. Size 70 available in Type 1052 only.

536 – – – 849 64 121 186 76

21.12 – – – 33.44 2.50 4.75 7.31 3.00

Table 4. Style H or J Mounting Dimensions

Type 1051 Type 1052

Inch

F H P Y

Instruction Manual

Form 5587

November 2006

1/4-INCH NPT

WOODRUFF KEY

19A1465-C

TYPE 1051 STYLE J

MOUNTING ADAPTATION

NOTE:

SEE PARTS LIST FOR WOODRUFF KEY NUMBERS

C0577-3 / IL

C (DIA)

19A1459-B

TYPE 1051 TYPE 1051 STYLE H

Figure 4. Type 1051 Mounting Dimensions (refer to table 4)

1/4-INCH NPT

MOUNTING ADAPTATION

Instruction Manual

Form 5587 November 2006

1051 & 1052 H & J

19A1461-D

1/4-INCH NPT

C (DIA)

TYPE 1052

1/4-INCH NPT

S (DIA)

19A1461-D

TYPE 1052 STYLE J MOUNTING ADAPTATION

FOR 44.5 AND 50.8 mm (1Ć3/4 AND 2ĆINCH)

KEYED EQUIPMENT SHAFT

WOODRUFF KEY

19A1467-E /

TYPE 1052 STYLE J ADAPTATION

9.5 THRU 38.1 mm (3/8 THRU 1Ć1/2ĆINCH) OUTPUT SHAFTS

NOTE:

SEE PARTS LIST FOR WOODRUFF KEY NUMBERS

C0676-3 / IL

19A1461-G

TYPE 1052 STYLE H ADAPTATION

12.7 THRU 38.1 mm (1/2 THRU 1Ć1/2ĆINCH) OUTPUT SHAFTS

Figure 5. Type 1052 Mounting Dimensions (refer to table 4)

1051 & 1052 H & J

1051

1052

Table 5. Style H Mounting Dimensions

ACTUATO

R SIZE

1051

40 40 22.2 7/8 26.2 1.03 19.1 0.75

40 & 60

1. Tolerance for the K dimension is indicated by showing maximum and minimum dimensions.

ACTUATO

R SIZE

1052

40 & 60 28.6 1-1/8 26.2 1.03 19.1 0.75

40, 60 &

ACTUATOR

OUTPUT SHAFT

DIAMETER

mm Inch mm Inch mm Inch mm Inch mm Inch mm Inch

38.1 1-1/2 28.4 1.50 28.4 1.12

V L K

15.75

15.62

22.10

21.97

28.45

28.32

(1)

0.620

0.615

0.870

0.865

1.120

1.115

Instruction Manual

November 2006

T U

57.2 2.25 28.4 1.12

76.2 3.00 38.1 1.50

88.9 3.50 44.5 1.75

Form 5587

5/16-18

UNC

3/8-16

UNC

1/2-13

UNC

22.2 THRU 38.1 mm

(7/8 THRU 1Ć1/2 INCH)

OUTPUT SHAFTS WITH

STYLE H MOUNTING

22.2 THRU 38.1 mm

(7/8 THRU 1Ć1/2 INCH)

OUTPUT SHAFTS WITH

STYLE H MOUNTING

Figure 6. Type 1051 and 1052 Style H Mounting Dimensions (refer to table 5)

Instruction Manual

(3)

Form 5587 November 2006

Table 6. Style J Mounting Dimensions

INNER

(1)

0.375

0.377

0.500

0.502

0.626

0.628

0.750

0.752

1.0010

1.0025

1.250

1.252

1.501

1.503

1.750

1.752

2.001

2.004

V L

(2)

137 5.38 39.6 1.56 15.7 0.62 117 4.62 - - - - - - 11.2 0.44

160 6.31 49.3 1.94 25.4 1.00 146 5.75 31.8 1.25 11.2 0.44

160 6.31 47.8 1.88 20.6 0.81 146 5.75 31.8 1.25 11.2 0.44

160 6.31 47.8 1.88 17.5 0.69 146 5.75 31.8 1.25 11.2 0.44

148 5.81 68.3 2.69 30.2 1.19 210 8.25 50.8 2.00 17.5 0.69

148 5.81 68.3 2.69 23.9 0.94 210 8.25 50.8 2.00 17.5 0.69

123 4.84 69.9 2.75 - - - - - - 88.9 3.50 44.5 1.75

ACTUATOR SIZE 1051 &

1052

VALVE SHAFT

DIAMETER

mm Inch mm Inch mm Inch mm Inch mm Inch mm Inch mm Inch mm Inch

9.5 3/8

12.7 1/2

15.9 5/8

19.1 3/4

40 & 60

25.4 1

31.8 1-1/4

60 & 70

38.1 1-1/2

50.8

60 & 70

1-3/4

& 2

50.8 2

1. Tolerance for the Coupling Inner diameter is indicated by showing maximum and minimum dimensions.

2. The L dimension is the matchline to the end of the actuator shaft.

3. Size 70 is only available for the Type 1052.

COUPLING

DIAMETER

9.53

9.58

12.70

12.75

15.90

15.95

19.05

19.10

25.43

25.48

31.75

31.80

38.13

38.18

44.45

44.50

50.83

50.90

1051 & 1052 H & J

K T U W

1/2-13

UNC

1/2-13

UNC

1/2-13

UNC

1/2-13

UNC

19A1461-G

9.5 AND 38.1 mm (5/8 AND 1Ć1/2ĆINCH)

STYLE J MOUNTING

44.5 AND 50.8 mm (1Ć3/4 AND 2ĆINCH)

44.5 AND 50.8 mm (1Ć3/4 AND 2ĆINCH) KEYED EQUIPMENT SHAFTS WITH

STYLE J MOUNTING

Figure 7. Type 1051 and 1052 Style J Mounting Dimensions (refer to table 6)

1051 & 1052 H & J

DESIRED

(3)

ACTION

OO,

POSITION

USE

(3)

Push Down to

p( )

Push Down to

(5)

()

SIZE

40 60 70

TYPE 1051 TYPE 1052 TOP-MOUNTED HANDWHEEL

Kg Lb Kg Lb Kg Lb

43 89

–––

Table 7. Approximate Actuator Weights

197

–––

45 92

123

99 203 272

Instruction Manual

Form 5587

November 2006

7.3 11

21.3

16 24 47

(1)

(2)

BODIES

(4)

Flow Right to

(4)

Left

(SEE FIGURE 10)

Counterclockwise to

Close Valve Action

Flow Left to

(4)

Right

(4)

Flow Right to

(4)

Left

DESIRED

ACTUATOR

DESIRED

SHAFT

ROTATION,

DEGREES

ACTUATOR MOUNTING

Table 8. Keyway Alignment Information

VALVE SHAFT KEYWAY TO USE FOR FISHTAILR DISC VALVE

COUPLING

KEYWAY TO

Clockwise to

Close Valve Action

Flow Left to

(4)

Right

1 B Nose Tail Tail Nose

Push Down to Open (PDTO)

60 or 90

2 A Tail Nose Nose Tail

3 B Tail Nose Nose Tail

4 A Nose Tail Tail Nose

1 A Tail Nose Tail Nose

Push Down to Close (PDTC)

or 90

2 B Tail Nose Tail Nose

3 A Nose Tail Nose Tail

4 B Nose Tail Nose Tail

1. For actuators with J mounting.

2. For conventional disc valve bodies, use either valve shaft keyway.

3. See figure 10 for reference coupling orientation to use with this table.

4. When viewed from actuator side of valve body.

5. For 60-degree rotation with PDTC action, the coupling and actuator output shaft assembly will be offset 30 degrees clockwise (for actuator housing construction style B) or counterclockwise (for actuator housing construction Style A) in the lever when viewed from the splined end of the actuator shaft. 30 degrees is one spline tooth for 9.5, 12.7, and 15.9 mm (3/8, 1/2, and 5/8-inch) valve shafts and two spline teeth for 19.1 through 38.1 mm (3/4 through 1-1/2 inch) valve shafts.

COUPLING

FULL KEYWAY LOCATED ON NOSE AND TAIL SIDE OF VALVE SHAFT

VALVE SHAFT

USE APPROPRIATE LETTERED KEYWAY AS INDICATED IN

PARTIAL KEYWAY FOR DETERMINING DISC POSITION

USE APPROPRIATE VALVE SHAFT KEYWAY AS INDICATED IN TABLE 8

TABLE 8

EXPLODED VIEW OF VALVE SHAFT

AND COUPLING

NOTE:

FOR USE WITH J MOUNTING ADAPTATION (UP TO 50.8 mm (2-INCH)

KEYED SHAFT DIAMETERS.

A3253-1

KEYWAY A

19B1465-B

REFERENCE COUPLING ORIENTATION

Figure 8. Valve Shaft Coupling

FOR TABLE 8

KEYWAY B ABOVE KEYWAY A

Instruction Manual

ACTUATOR

1052

Form 5587 November 2006

1051 & 1052 H & J

Center of Gravity Dimensions

ACTUATOR ACTUATOR

TYPE

1051

1052

SIZE

40 15 0.6 191 7.5

60 10 0.4 361 14.2

40 15 0.6 241 9.5

60 10 0.4 432 17.0

70 23 0.9 488 19.2

X Y

mm Inch mm Inch

part of the assembly, the pressure connection to the actuator will normally be made at the factory.

3. When the actuator is completely installed and connected to the instrument, check for correct action (air-to-open or air-to-close) to match the controlling instrument. For successful operation, the actuator stem and operating shaft must move freely in response to the loading pressure change on the diaphragm.

Adjustment

WARNING

Before performing any adjustment steps, follow the steps in the WARNING at the beginning of the Maintenance section.

Figure 9. Center of Gravity Dimensions

Loading Connection

1. Connect the loading pressure piping to the pressure connection in the top of the diaphragm casing.

For size 40 through 60 actuators, run either 1/4-inch pipe or 3/8-inch tubing between the 1/4-inch pressure connection and the positioner or automatic controller.

For size 70 actuators, run either pipe or tubing between the pressure connection and the positioner or automatic controller. If necessary, remove the 1/4-inch bushing in the pressure connection to increase connection size.

2. Keep the length of pipe or tubing as short as possible to avoid transmission lag in the control signal. If an accessory (such as a volume booster or a positioner) is used, be sure that the accessory is properly connected to the actuator. If a positioner is

Type 1051 and 1052 Turnbuckle Adjustment

Correct turnbuckle adjustment ensures that the valve body or other operated equipment is correctly closed when the actuator is against its travel stops. The turnbuckle adjustment is the only adjustment necessary on the Type 1051 actuator. Key numbers used in this procedure are shown in figure 12 for Type 1051 actuators and in figure 13 for Type 1052 actuators.

For accurate adjustment, remove the valve body or other operated equipment from the pipeline.

A regulated air supply will be required to stroke the actuator. Consult table 9 for the sizes of the three open end wrenches required for this procedure.

1. Remove the access plate (key 59). Also remove the machine screws (key 60), if present.

Note

For the most accurate adjustment of the actuator, do not remove the cover (key 33) during this procedure.

2. Loosen the lower locknut (key 16).

+ 25 hidden pages