Dwyer LIN-E-AIRE User Manual

LIN-E-AIRE®Valve Actuators

Specifications - Installation and Operating Instructions

Push-to-Close
Termination Nos. 220 thru 223, 240 thru 244

Push-to-Open
Termination Nos. 230, 231, 233, 250 thru 254

Bulletin IB-5A103

Push-to-Close

NOTICE: Information in this manual is intended only to assist our customers in the efficient operation of our equipment. Use of this manual for any other pur-

pose is specifically prohibited and its contents are not to be reproduced in full or part without prior approval.

Use of the DANGER, WARNING, CAUTION and NOTE
This publication includes DANGER, WARNING, CAUTION and NOTE information where appropriate to point out safety related or other important information.

DANGER - Hazards which will result in severe personal injury or death.
WARNING - Hazards which could result in personal injury.
CAUTION - Hazards which could result in equipment or property damage.
NOTE - Alerts user to pertinent facts and conditions.

Although DANGER and WARNING hazards are related to personal injury, and CAUTION hazards are associated with equipment or pr operty damage, it should
be understood that operation of damaged equipment could, under certain operational conditions, result in degraded process system performance leading to
personal injury or death. Therefore, comply fully with all DANGER, WARNING, and CAUTION notices.

W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.

P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S. A.

1

Phone: [phone] www.dwyer-inst.com
Fax: [phone] e-mail: [e-mail]

Push-to-Open

TABLE OF CONTENTS

1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

1.2 Catalog Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

1.3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.1 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.2 Pneumatic Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.1 Checking Valve Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

3.2 Adjusting Actuator Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

3.2.1 Air-to-Lower Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

3.2.2 Air-to-Raise Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

4 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4.1 Test Equipment and Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4.2 Adjusting Valve Plug Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4.2.1 Push-to-Close Valve with Air-to-Lower Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4.2.2 Push-to-Close Valve with Air-to-Raise Actuator or Push-to-Open Valve with Air-to-Lower Actuator . . . . . . . . . . . . . .8

4.3 Replacing Actuator Diaphragm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4.3.1 Air-to-Lower Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4.3.2 Air-to-Raise Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4.4 Changing Range Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4.4.1 Air-to-Lower Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

4.4.2 Air-to-Raise Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

ILLUSTRATIONS

Fig. 1 Air-to-Lower Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Fig. 2 Air-to-Raise Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Fig. 3 Mounting Dimensions for Air-to-Lower Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Fig. 4 Mounting Dimensions for Air-to-Raise Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Fig. 5 Travel Indicator Plate Showing Valve Plug Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Fig. 6 Adjusting Actuator Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Fig. 7 Adjusting Valve Plug Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Fig. 8 Disassembly of Air-to-Lower Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Fig. 9 Disassembly of Air-to-Raise Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

TABLES

1 Air-to-Lower Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2 Air-to-Raise Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

3 Maximum Air Supply Pressure and Maximum Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

4 Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

2

1. INTRODUCTION

O-Ring

Spring Seat

Range Spring

Push Plate

Assembly

Upper Diaphragm
Casing

1/4˝ NPT
Input Connection

Diaphragm

Lower Diaphragm

Casing

Push Rod

Range Spring

Adjusting Screw

Travel Indicator

Plate

Travel Indicator

Yoke

Valve Stem

Range Spring
Adjusting Screw

Spring Casing

Diaphragm
Casing

1/4˝ NPT
Input Conn.

Diaphragm

O-Ring

Travel Stop
Collar

Push Rod

Valve Stem

Travel Indicator

Travel Indicator

Plate

Yoke

V-Packing

Push Plate

Range Spring

Spring Seat

O-Ring

1.1 DESCRIPTION
The Lin-E-Aire

tion of the control valve. The opening, closing or throttling of the
valve plug in the valve body is accomplished by varying the air
pressure to the diaphragm in the actuator. This pressure is trans­mitted from a control device, which may be controlling pressure,
liquid level, temperature or flow.

®

Valve Actuators are used for automatic opera-

Thus, by selection of actuator and control valve plug action,
either push-to-close or push-to-open, the control valve will either
open or close on failure of air pressure to diaphragm.

The spring and diaphragm are completely enclosed to protect
them from dust, dirt and other foreign matter. Spring adjustments
are made with a ball bearing spring adjustment sleeve.
Diaphragm and spring assembly may easily be removed for
replacement or substitution.

Two types of actuators are used for process control, the choice
of either depends upon the valve action desired in case of air
supply failure. There are two types

Air-to-Lower - Termination Nos. 220 thru 223, 240 thru 244,
Figure 1. In this type of actuator, air pressure moves the push rod
downward compressing the spring. In the event of air failure, the
push rod moves to its extreme upward position.

Air-to-Raise - Termination Nos. 230, 231, 233, 250 thru 254,
Figure 2. In this type of actuator, air pressure moves the push rod
upward compressing the spring. In the event of air failure, the
push rod moves to its extreme downward position.

The construction and operating range are listed on the data plate
mounted on actuator. Actuator size and spring are selected to
meet the requirements of the application. In service the actuator
should create full travel of the valve plug when the pressure range
indicated on data plate is applied. This pressure range is most
generally 3 to 15 psi (20 to 100 kPa), but other ranges are avail­able.

For precise control of valve plug position or where two valves are
to be operated in sequence by one control device, a W.E.
Anderson valve positioner, Catalog Number 100N or 165, is rec­ommended.

Figure 1. Air-to-Lower Actuator

Figure 2. Air-to-Raise Actuator

3

1.2 Catalog Numbers
Control Valves - Hi-Flow™ Series Model Chart

Example 2 00 1 V A 3 2 230 LO

2001VA32-230-LO Hi-Flow™Globe Valve; 2-way, 3/4˝ NPT connec­tion, linear plug, bronze body, 316 SS trim, reduced port 1/2˝ size.

Configuration 2

3

Valve Body

Action

00
01

0
1
2
3

Connection

Size

4
5
6
7
8

Valve Seat V

Valve Plug

Type

Valve Body

Material

W

2-way
3-way

Push-To-Close
Push-To-Open (2-way only)

1/2˝ NPT
3/4˝ NPT
1˝ NPT
1-1/4˝ NPT
1-1/2˝ NPT (or Flange with LRF or HRF option)
2˝ NPT (or Flange with LRF or HRF option)
2-1/2˝ Flange (see options)
3˝ Flange (see options)
4˝ Flange (see options)

Single Seat (2-way only)
Double Seat (3-way only)

A
L
S
N

1
3
4

Linear
Linear Needle (2000 to 2002 only)
Equal Percentage (2000 to 2005 only)
Equal Percentage Needle (2000 to 2002 only)

Ductile Iron
Bronze
316 SS

Trim

Material

Actuator

Needle Plug

Port Size

Options

2 316 SS

220
221
222
223
230
231
233

2
3
4
5
6
7
8
9

Air-To-Lower, 20 in
Air-To-Lower, 45 in
Air-To-Lower, 45 in
Air-To-Lower, 80 in
Air-To-Raise, 20 in2 (2-way only)
Air-To-Raise, 45 in
Air-To-Raise, 80 in

1/8˝ for Type N valve plug
3/16˝ for Type N valve plug
1/4˝ for Type N valve plug
5/16˝ for Type N valve plug
3/8˝ for Type N valve plug
1/32˝ for Type L valve plug
1/16˝ for Type L valve plug
3/32˝ for Type L valve plug

A

Positioner factory mounted
(specify positioner model)

L0

Reduced port: 3/4˝ to 1/2˝ port size (2001 only)
Reduced port: 1˝ to 1/2˝ port size (2002 only)

L1

Reduced port: 1˝ to 3/4˝ port size (2002 only)

Z

Special operating range (2-10 psi, 10-18 psi)

LRF

Low Range Flange: Class 125 in Iron or Class 150 Bronze, 316 SS
body (for 1-1/2˝ and 2˝ sizes only, standard on 2-1/2˝, 3, and 4˝ size)

HRF

High Range Flange: Class 250 in Iron or Class 300 in Bronze, 316
SS body (for 1-1/2˝ to 4˝ sizes)

2
2
2
2

2

(2-way only)

2

(2-way only)

4

1.3 Specifications

Table 1. Air-to-Lower Actuator

Standard Actuator

Boss

Dia.

1-1/2˝

1-15/16˝

2-1/8˝
2-13/16˝
2-13/16˝

Table 2. Air-to-Raise Actuator

Boss

Dia.

1-1/2˝
1-15/16˝

2-1/8˝
2-13/16˝
2-13/16˝

Term.

No.

220
222
240
242
244

Term.

No.

230

­250
252
254

Part

No.

15S620
15S622
15S640
15S642
15S644

Standard Actuator

Part

No.

15S630

­15S650
15S652
15S654

ACTUATOR MATERIALS
Frame: Cast Iron, Baked Enamel Finish.
Diaphragm Case: Steel, Baked Enamel Finish.
Diaphragm: Buna-N-rubber, Nylon reinforced.
Range Spring: Plated spring steel.
Range Spring Seat: Plated steel.
Adjusting Screw: Plated cold rolled steel.
Push Rod: Plated steel.

AMBIENT TEMPERATURE LIMITS

-32 to 150°F (-36 to 66°C).

MAXIMUM ACTUATOR AIR PRESSURE

Refer to Table 3.

AIR CONNECTION: 1/4˝ female NPT.

No. of

Bolts

10
12
12
12
18

No. of

Bolts

10

­10
12
18

Effective

Area

20 sq. in.
45 sq. in.
20 sq. in.
45 sq. in.
80 sq. in.

Effective

Area

20 sq. in.

­20 sq. in.
45 sq. in.
80 sq. in.

Senior Actuator

Term

No.

221
223
241
243

-

Term

No.

231
233
251
253

-

Table 3. Maximum Air Supply Pressure and Maximum Stroke

Termination

Number

220
240
221
241
222
242
223

Air-to-Lower

243
244

230
250
231
233
251
252

Air-to-Raise

253
254

15S621
15S623
15S641
15S643

15S631
15S633
15S651
15S653

Part No.

Standard

15S620
15S640
15S621
15S641
15S622
15S642
15S623
15S643
15S644

15S630
15S650
15S631
15S633
15S651
15S652
15S653
15S654

Part

No.

-

Senior Actuator

Part

No.

-

Max. Air Supply

psig kPa

100
100

50

50
100
100

50

50

70

100
100

50
50
50

100

50
70

No. of

Bolts

12
18
12
18

-

No. of

Bolts

12
18
12
18

-

Pressure

700
700
350
350
700
700
350
350
480

700
700
350
350
350
700
350
480

Effective

Area

45 sq. in.
80 sq. in.
45 sq. in.
80 sq. in.

-

Effective

Area

45 sq. in.
80 sq. in.
45 sq. in.
80 sq. in.

-

Max. Stroke

Inches

1
1
1
1
1-1/2
1-1/2
1-1/2
1-1/2
2-1/4

1
1
1
1-1/2
1
1-1/2
1-1/2
2-1/4

mm

25.4

25.4

25.4

25.4

38.1

38.1

38.1

38.1

57.2

25.4

25.4

25.4

38.1

25.4

38.1

38.1

57.2

MAXIMUM STROKE

Refer to Table 3.

2. INSTALLATION

2.1 Mounting - The Lin-E-Aire®Valve Actuator is normally fur-

nished mounted on a valve body. Follow the valve body instruc­tions when installing the control valve in the pipeline.

Clearance should be left above and below the control valve to
permit removal of actuator and valve plug. Removal clearance
dimensions are specified in the control valve instructions, as well
as installation instructions. The actuator will sometimes be
shipped alone for field mounting on a valve body. Mount actuator
as outlined in the control valve instructions.

2.2 Pneumatic Connections - Connect the input pressure to
the 1/4˝ female NPT port on the top of an air-to-lower actuator or
under the diaphragm casing on an air-to-raise actuator, Figure 3
or 4. Either pipe or tubing may be used for the air line. The input
pressure must not exceed the limits listed under the specifica­tions.

When there is a long distance between the actuator and the con­trol device which produces the input pressure, or when a large
actuator size is required, there may be excessive transmission lag
in the control signal. A W.E. Anderson Valve Positioner, Catalog
Number 100N or 165, can be used to reduce the lag. If a valve
positioner is included with the actuator, connections between the
positioner and actuator are made at the factory. Refer to the valve
positioner instructions for additional connection information.

5

Input Conn.
1/4˝ female NPT

Input Conn.
1/4˝ female NPT

Valve Body
Dimension

Figure 3. Mounting Dimension for Air-to-Lower Actuator

Standard Actuator in. (mm)

Part

Term

No.

No.

15S620

220

15S622

222

15S640

240

15S642

242

15S644

244

Senior Actuator in. (mm)

Part

Term

No.

No.

15S621

221

15S623

223

15S641

241

15S643

243

For reference only; not for construction.

X

7-3/4 (196.85)

10-5/8 (269.86)

7-3/4 (196.85)
10-5/8 (269.86)
13-3/8 (339.73)

X

10-5/8 (269.86)
13-3/8 (339.73)
10-5/8 (269.86)
13-3/8 (339.73)

15-7/8 (403.23)
18-5/8 (473.08)
15-7/8 (403.23)
18-5/8 (473.08)
22-5/8 (574.68)

16-9/16 (420.69)

20 (508.00)

16-9/16 (420.69)

20 (508.00)

No. of

Y

Y

Bolts

No. of

Bolts

10

1-1/2 (38.10)

12

1-15/16 (49.21)

10

2-1/8 (53.98)

12

2-13/16 (71.44)

18

2-13/16 (71.44)

12

1-1/2 (38.10)

18

1-15/16 (49.21)

12

2-1/8 (53.98)

18

2-13/16 (71.44)

Yoke Boss

Hole Diam.

Yoke Boss

Hole Diam.

3. OPERATION

3.1 Check Valve Travel - The actuator spring has been select-

ed to meet the requirements of the application and has been
adjusted at the factory to the pressure range stamped on the
data plate. The spring has a constant rate of compression, and
adjustments shift the pressure span up or down to make stem
travel coincide with this pressure range. When in service, the
actuator should yield the required travel when pressure range
stamped on data plate is applied. This diaphragm pressure range
is generally 3 to 15 psi (20 to 100 kPa), but other ranges may be
used.

Valve Body
Dimension

Figure 4. Mounting Dimension for Air-to-Raise Actuator

Standard Actuator in. (mm)

Part

Term

No.

No.

15S630

230

15S650

250

15S652

252

15S654

254

Senior Actuator in. (mm)

Part

Term

No.

No.

15S631

231

15S633

233

15S651

251

15S653

253

For reference only; not for construction.

X

7-3/4 (196.85)

7-3/4 (196.85)
10-5/8 (269.86)
13-3/8 (339.73)

X

10-5/8 (269.86)
13-3/8 (339.73)
10-5/8 (269.86)
13-3/8 (339.73)

17-3/16 (436.56)
17-3/16 (436.56)

20-3/4 (527.05)

32-7/32 (818.36)

Y

17-13/16 (452.44)

22-9/32 (565.94)

17-13/16 (452.44)

22-9/32 (565.94)

No. of

Y

Bolts

No. of

Bolts

10

1-1/2 (38.10)

12

2-1/8 (53.98)

12

2-13/16 (71.44)

18

3-9/16 (90.49)

12

1-1/2 (38.10)

18

1-1/2 (38.10)

12

2-1/8 (53.98)

18

2-13/16 (71.44)

Yoke Boss

Hole Diam.

Yoke Boss
Hole Diam.

When the actuator is completely installed and connected to the
control device, it should be checked with normal working line
pressure conditions for correct travel. Apply the pressure range
listed on the data plate to the actuator. Note that travel indicator
should have moved the distance marked on indicator plate,
Figure 5.

The pressure drop across the valve body ports has a direct effect
on the actual operating pressure range. In some instances, the
valve operating range may be different from the indicated range.
This is because the pressure conditions in the valve body are dif­ferent from those originally specified and for which the control
valve has been set at the factory. If this difference is small, a
spring adjustment is all that is required to obtain correct operat­ing range, refer to Adjusting Actuator Range.

Figure 5. Travel Indicator Plate Showing Valve Plug Travel

6

3.2 Adjusting Actuator Range
Note: When using this procedure, be sure that the valve is oper-

ating under normal line pressure conditions.

3.2.1 Air-to-Lower Actuator

1. Slowly increase input pressure until stem just begins to move.
Stem motion can be accurately detected by feeling stem or push
rod as pressure is applied.

WARNING: If valve is used for steam service or where line
process is hot, use visual means of detecting movement to avoid
injury.

2. Note input pressure at which stem moves.

3. If input pressure is not the same as lower range value on data
plate, spring adjusting screw must be adjusted.

If pressure is high, turn adjusting screw, Figure 6, counter-

clockwise as viewed from the valve top.

If pressure is low, turn adjusting screw clockwise as viewed

from the valve top.

4. Release input pressure and repeat Steps 1, 2 and 3 until stem
moves at the lower range value.

3.2.2 Air-to-Raise Actuator

1. Loosen the four set screws on travel stop collar, Figure 6, col­lar should move freely on push rod.

2. Slowly increase input pressure until stem just begins to move.
Stem motion can be accurately detected by feeling stem or push
rod as pressure is applied.

WARNING: If valve is used for steam service or where line
process is hot, use visual means of detecting movement to avoid
injury.

3. Note input pressure at which stem moves.

4. If input pressure is not the same as lower range value on data
plate, spring adjusting screw must be adjusted.

If pressure is high, turn adjusting screw clockwise as viewed

from the valve top.

If pressure is low, turn adjusting screw counterclockwise as

viewed from the valve top.

5. Release input pressure and repeat Steps 2, 3 and 4 until valve
stem moves at lower range value.

6. Apply the upper range value input pressure stamped on data
plate. Slide travel stop collar up on push rod right to yoke and
tighten the four set screws.

Figure 6. Adjusting Actuator Range

7

4. MAINTENANCE

4.1 Test Equipment and Tools Required - The only test equip-

ment required for valve and actuator maintenance is an air sup­ply source, gage and regulator. The tools required are shown in
Table 4.

Table 4. Tools Required

Actuator

Size

All

Tool

Screwdriver

Open End
Wrenches

Size

3/16 in.

1/4 in.
1/2 in.

9/16 in.

5/8 in.

7/8 in.
1-1/4 in.
1-1/2 in.

1-15/16 in.

9/16 in.
11/16 in.
13/16 in.
31/32 in.

1 in.

Use

Travel Indicator Plate

Diaphragm Casing

Mounting Screw & Nut

Range Spring

Adjusting Screw

Actuator Push Rod

Note: If pressure range required to obtain full valve plug travel
does not agree with range stamped on data plate, refer to 3.2
Adjusting Actuator Range.

4.2.2 Push-to-Close Valve with Air-to-Raise Actuator or
Push-to-Open Valve with Air-to-Lower Actuator

1. Apply air pressure to actuator to fully open valve and note loca­tion of travel indicator.

2. If indicator is not at travel marks on plate, Figure 5, measure
distance between indicator and mark.

CAUTION: Do not make any adjustment when valve plug is on
its seat.

3. Loosen stem locknut, Figure 7. Grip valve stem near threads,
and turn stem to move valve plug the distance measured in Step

2.

4. Position indicator toward travel indicator plate and tighten
valve stem locknut.

5. Vent all pressure from actuator.

6. Repeat Step 1 thru 5 until travel indicator is at travel marks
when valve is fully opened.

Note: If pressure range required to obtain full valve plug travel
does not agree with range stamped on data plate, refer to 3.2
Adjusting Actuator Range.

Figure 7. Adjusting Valve Plug Travel

4.2 Adjusting Valve Plug Travel - The purpose of this proce-

dure is to adjust the length of valve stem engagement in the push
rod so that the travel indicator is at the travel marks on the indi­cator plate when valve is fully closed.

4.2.1 Push-to-Close Valve with Air-to-Lower Actuator

1. Apply air pressure to actuator to fully close valve and note
location of travel indicator.

2. If indicator is not at travel marks on plate, Figure 5, measure
distance between indicator and mark.

CAUTION: Do not make any adjustments when valve plug is on
its seat.

3. Vent all pressure from actuator.

4. Loosen stem locknut, Figure 7. Grip valve stem near threads,
and turn stem to move valve plug the distance measured in Step

2.

5. Position indicator toward travel indicator plate and tighten
valve stem locknut.

4.3 Replacing Actuator Diaphragm
WARNING: Before attempting any maintenance on contr ol valve,

make sure valve has been relieved of all pressure.

4.3.1 Air-to-Lower Actuator

1. Isolates or bypass the control valve in pipe line.

2. Shut off pressure to actuator and disconnect air line.

3. Turn range spring adjusting screw counter-clockwise to relieve
all spring compression.

WARNING: If all spring compression is not r elieved, serious injury
can occur when removing upper diaphragm casing.

4. Loosen and remove all diaphragm casing mounting bolts, nuts
and washer, Figure 8.

5. Lift off upper diaphragm casing from actuator assembly.

6. Remove old diaphragm and discard.

7. Install upper diaphragm casing with new diaphragm on actua­tor assembly. Fasten with bolts, nuts and washers removed in
Step 4.

8. Reconnect pipe or tubing to pressure connection in upper
diaphragm casing.

9. Readjust actuator travel, refer to 3.2 Adjusting Actuator Range.

6. Repeat Steps 1 thru 5 until travel indicator is at travel marks
when valve is fully closed.

8

4.3.2 Air-to-Raise Actuator

1. Isolate or bypass the control valve in pipe line.

2. Shut off pressure to actuator and disconnect air line.

3. Turn range spring adjusting screw clockwise to relieve all
spring compression.

WARNING: If all spring compression is not r elieved, serious injury
can occur when removing spring and diaphragm casing.

4. Loosen and remove all diaphragm casing mounting bolts, nuts
and washers, Figure 9.

5. Lift off spring and diaphragm casing from actuator assembly.

6. Remove old diaphragm and discard.

CAUTION: Do not rotate valve plug on seat ring. It may be nec­essary to use pliers to hold valve stem. If necessary, grip stem
near threads to avoid scoring stem.

7. Remove push rod and push plate with range spring from actu­ator assembly.

8. Install new range spring with push rod and push plate in actu­ator assembly.

9. Screw push rod on to valve stem on top of stem locknut and
tighten locknut.

10. Install diaphragm casing with diaphragm on actuator assem­bly. Fasten with the bolts, nuts and washers removed in Step 4.

11. Reconnect pipe or tubing to pressure connection in upper
diaphragm casing.

7. Install spring and diaphragm casing with new diaphragm on
actuator assembly. Fasten with bolts, nuts and washers removed
in Step 4.

8. Reconnect pipe or tubing to pressure connection in yoke.

9. Readjust actuator travel, refer to 3.2 Adjusting Actuator Range.

4.4 Changing Actuator Range Spring

4.4.1 Air-to-Lower Actuator

1. Isolate or bypass the control valve in pipe line.

2. Shut off pressure to actuator and disconnect air line.

3. Turn range spring adjusting screw counterclockwise to relieve
all spring compression.

WARNING: If all spring compression is not r elieved, serious injury
can occur when removing upper diaphragm casing.

4. Loosen and remove all diaphragm casing mounting bolts, nuts
and washer, Figure 8.

5. Lift off upper diaphragm casing and diaphragm from actuator
assembly.

6. Loosen valve stem locknut just enough to unscrew push rod
with push plate from valve stem.

12. Readjust actuator travel, refer to 3.2 Adjusting Actuator
Range.

4.4.2 Air-to-Raise Actuator

1. Isolate or bypass the control valve in pipe line.

2. Shut off pressure to actuator and disconnect air line.

3. Turn range spring adjusting screw clockwise to relieve all
spring compression.

WARNING: If all spring compression is not relieved, serious injury
can occur when removing spring casing.

4. Unscrew spring casing with adjusting screw from diaphragm
casing, Figure 9.

5. Remove old range spring and install new spring.

6. Screw spring casing with adjusting screw onto diaphragm cas­ing.

7. Reconnect pipe or tubing to pressure connection in yoke.

8. Readjust actuator travel, refer to 3.2 Adjusting Actuator Range.

9

Figure 8. Disassembly of Air-to-Lower Actuator

10

Figure 9. Disassembly of Air-to-Raise Actuator

11

NOTES:

©Copyright 2010 Dwyer Instruments, Inc. Printed in U.S.A. 2/10 FR# T4-443787-00 Rev. 1

W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.

P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S. A.

Phone: [phone] www.dwyer-inst.com
Fax: [phone] e-mail: [e-mail]