Dwyer 2000VA32-230, 2000VA42-230, 2001VA32-230, 2001VA32-231, 2001VA42-230 Manual

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LIN-E-AIRE® Valve Actuators

RANGE SPRING

CONN.

Specications - Installation and Operating Instructions

Bulletin IB-5A103

Push-to-Close

Termination Nos. 220 through

223, 240 through 244

Push-to-Open

Termination Nos. 230, 231,

233, 250 through 254

Model Air to OpenAIN [MM]

2000VA32-230 2000VA42-230 2001VA32-230 2001VA32-231 2001VA42-230 2001VA42-231 2002VA32-230 2002VA32-231 2002VA42-230 2002VA42-231 2003VA32-230 2003VA32-231 2003VA32-233 2003VA42-230 2003VA42-231 2003VA42-233 2004VA32-230 2004VA32-231 2004VA32-233 2004VA42-230 2004VA42-231 2004VA42-233 2005VA32-230 2005VA32-231 2005VA32-233 2005VA42-230 2005VA42-231 2005VA42-233 2006V1A2-233 2006VA32-233 2006VA42-233 2007V1A2-233 2007VA32-233 2007VA42-233 2008V1A2-233 2008VA32-233 2008VA42-233

19-3/4 [501.7] 19-3/4 [501.7] 19-3/4 [501.7] 20-3/8 [517.5] 19-3/4 [501.7] 20-3/8 [517.5] 20-3/16 [512.8] 20-13/16 [528.6] 20-3/16 [512.8] 20-13/16 [528.6] 20-5/16 [515.9] 20-15/16 [531.8] 25-13/32 [645.3] 20-5/16 [515.9] 20-15/16 [531.8] 25-13/32 [645.3] 20-11 /16 [525.5 20-5/16 [541.3] 25-25/32 [654.8] 20-11/16 [525.5] 20-5/16 [541.3] 25-25/32 [654.8] 20-15/16 [531.8] 21-9/16 [547.7] 26-1/32 [661.2] 20-15/16 [531.8] 21-9/16 [547.7] 26-1 /32 [661.2] 26-1/4 [666.8] 26-1 / 4 [666.8] 26-1/4 [666.8] 27 [686] 27 [686] 27 [686] 27-1/4 [692] 27-1/4 [692] 27-1/4 [692]

C IN [MM]

7-3/4 [196.9] 7-3/4 [196.9] 7-3/4 [196.9] 10-5/8 [269.9] 7-3/4 [196.9] 10-5/8 [269.9] 7-3/4 [196.9] 10-5/8 [269.9] 7-3/4 [196.9] 10-5/8 [269.9] 7-3/4 [196.9] 10-5/8 [269.9] 13-3/8 [339.7] 7-3/4 [196.9] 10-5/8 [269.9] 13-3/8 [339.7] 7-3/4 [196.9] 10-5/8 [269.9] 13-3/8 [339.7] 7-3/4 [196.9] 10-5/8 [269.9] 13-3/8 [339.7] 7-3/4 [196.9] 10-5/8 [269.9] 13-3/8 [339.7] 7-3/4 [196.9] 10-5/8 [269.9] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7]

Model

Air to CloseAIN [MM]

2000VA32-220 2000VA42-220 2001VA32-220 2001VA32-221 2001VA42-220 2001VA42-221 2002VA32-220 2002VA32-221 2002VA42-220 2002VA42-221 2003VA32-220 2003VA32-221 2003VA32-223 2003VA42-220 2003VA42-221 2003VA42-223 2004VA32-220 2004VA32-221 2004VA32-223 2004VA42-220 2004VA42-221 2004VA42-223 2005VA32-220 2005VA32-221 2005VA32-223 2005VA42-220 2005VA42-221 2005VA42-223 2006V1A2-223 2006VA32-223 2006VA42-223 2007V1A2-223 2007VA32-223 2007VA42-223 2008V1A2-223 2008VA32-223 2008VA42-223

18-7/16 [468.3] 18-7/ 16 [468.3] 18-7/ 16 [468.3] 19-1 /8 [485.8] 18-7 /16 [468.3] 19-1 /8 [485.8] 18-7 /8 [479.4] 19-9/16 [496.9] 18-7 /8 [479.4] 19-9/16 [496.9] 19 [482.6] 19-11/16 [500.1] 23-1/8 [587.4] 19 [4 82.6] 19-11/16 [500.1] 23-1/8 [587.4] 19-3/8 [492.1] 20-1/16 [509.6] 23-1 /2 [596.9] 19-3/8 [492.1] 20-1/16 [509.6] 23-1 /2 [596.9] 19-5/8 [498.5] 20-5/16 [515.9] 23-3/4 [603.3] 19-5/8 [498.5] 20-5/16 [515.9] 23-3/4 [603.3] 24-7/16 [620.7] 24-7/16 [620.7] 24-7/16 [620.7] 24-3/4 [629] 24-3/4 [629] 24-3/4 [629] 25 [635] 25 [635] 25 [635]

C IN [MM]

7-3/4 [196.9] 7-3/4 [196.9] 7-3/4 [196.9] 10-5/8 [269.9] 7-3/4 [196.9] 10-5/8 [269.9] 7-3/4 [196.9] 10-5/8 [269.9] 7-3/4 [196.9] 10-5/8 [269.9] 7-3/4 [196.9] 10-5/8 [269.9] 13-3/8 [339.7] 7-3/4 [196.9] 10-5/8 [269.9] 13-3/8 [339.7] 7-3/4 [196.9] 10-5/8 [269.9] 13-3/8 [339.7] 7-3/4 [196.9] 10-5/8 [269.9] 13-3/8 [339.7] 19-5/8 [498.5] 10-5/8 [269.9] 13-3/8 [339.7] 7-3/4 [196.9] 10-5/8 [269.9] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7] 13-3/8 [339.7]

NOTICE

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

WARNING

CAUTION

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 property 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.

The Lin-E-Aire

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 ow.

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 through 223, 240 through 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 through 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.

Information in this manual is intended only to assist our customers

in the efcient operation of our equipment. Use of this manual for any other purpose is specically prohibited and its contents are not

Hazards which will result in severe personal injury or death.

Hazards which could result in personal injury.

Hazards which could result in equipment or property damage.

Valve Actuators are used for automatic operation of the control valve.

DWYER INSTRUMENTS, LLC

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.

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.

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.

1/4˝ NPT

INPUT CONNECTION

DIAPHRAGM

LOWER

DIAPHRAGM

CASING

PUSH ROD

RANGE SPRING

DJUSTING SCREW

TRAVEL

INDICATOR PLATE

TRAVEL

INDICATOR

YOKE

Figure 1: Air-to-lower actuator Figure 2: Air-to-raise actuator

UPPER DIAPHRAGM

CASING

PUSH PLATE

ASSEMBLY

RANGE SPRING

SPRING

SEAT

O-RING

VALV E STEM

Phone: 219-879-8000

Fax: 219-872-9057

O-RING

SPRING

SEAT

RANGE SPRING

PUSH

PLATE

V-PA CKING

YOKE

TRAVEL

INDICATOR

PLATE

TRAVEL

INDICATOR

www.dwyer-inst.com

e-mail: info@dwyermail.com

ADJUSTING

SCREW

SPRING CASING

DIAPHRAGM

CASING

1/4˝ NPT

INPUT

DIAPHRAGM

O-RING

TRAVEL STOP

COLLAR

PUSH ROD

VALVE STEM

MODEL CHART Example 2 00 1 V A 3 2 -230 -LO 2001VA32-230-LO Conguration 2

Valve Body Action

Connection

Size

00 01

0 1 2 3 4 5 6 7 8

Valve Seat V

Valve Plug Type

Valve Body

Material

A L S N

1 3 4

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

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

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 2 316 SS

Actuator 220

221 222 223 230 231 233

Needle Plug

Port Size

2 3 4 5 6 7 8 9

Options A

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

Positioner factory mounted (specify positioner model)

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

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

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

LRF

Low range ange: 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 ange: Class 250 in iron or class 300 in bronze, 316 SS body (for 1-1/2˝ to 4˝ sizes)

(2-way only)

AIR-TO-LOWER ACTUATOR

Standard Actuator Senior 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

Part No.

15S620 15S622 15S640 15S642 15S644

AIR-TO-RAISE ACTUATOR

Standard Actuator Senior Actuator

Boss Dia.

1-1/2˝ 1-15/16˝ 2-1/8˝ 2-13/16˝ 2-13/16˝

Term.

No.

230

250 252 254

Part No.

15S630

15S650 15S652 15S654

No. of

Bolts

10 12 12 12 18

No. of

Bolts

10 12 18

MAXIMUM AIR SUPPLY PRESSURE AND MAXIMUM STROKE

Max. Air Supply

Effective

Area

20 in

45 in

20 in

45 in

80 in

Table 1

Effective

Area

20 in

45 in

80 in

Term

No.

221 223 241 243

Term

No.

231 233 251 253

Part No.

15S621 15S623 15S641 15S643

Part No.

15S631 15S633 15S651 15S653

No. of

Bolts

12 18 12 18

No. of

Bolts

12 18 12 18

Effective

Area

45 in

80 in

45 in

80 in

Effective

Area

45 in

80 in

45 in

80 in

Termination Number

Air-toLower

Air-toRaise

Part No.

Pressure Max. Stroke

Standard psig kPa Inches mm

220 240 221 241 222 242 223 243 244

230 250 231 233 251 252 253 254

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

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

100 100 50 50 100 100 50 50 70

100 100 50 50 50 100 50 70

Table 2 Table 3

700 700 350 350 700 700 350 350 480

700 700 350 350 350 700 350 480

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

25.4

38.1

57.2

25.4

38.1

25.4

38.1

57.2

ACTUATOR MATERIALS

Frame: Cast iron, baked enamel nish. Diaphragm Case: Steel, baked enamel nish. 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.

MAXIMUM STROKE

Refer to Table 3.

INSTALLATION

WARNING

When working on the Actuator/Valve assembly, disconnect the air

or power supply to the actuator. Spring return actuators/valves may change position if power fails or is removed. Never insert any object or body part into the valve body. Severe injury may occur.

Mounting - The Lin-E-Aire

Valve Actuator is normally furnished 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 specied in the control valve instructions, as well as installation instructions. The actuator will sometimes be shipped alone for eld mounting on a valve body. Mount actuator as outlined in the control valve instructions.

SENIOR ACTUATOR IN. [MM] Term.

Part

No.

No. X Y

221

15S621

223 241 243

15S623 15S641 15S643

10-5/8 [269.86] 13-3/8 [339.73] 10-5/8 [269.86] 13-3/8 [339.73]

16-9/16 [420.69] 20 [508.00] 16-9/16 [420.69] 20 [508.00]

Note: For reference only; not for construction.

INPUT CONN.

1/4˝ FEMALE NPT

VALVE BODY DIMENSION

Figure 4: Mounting dimension for air-to-raise actuator

STANDARD ACTUATOR IN [MM] Term.

Part

No.

No. X Y

230

15S630

250 252 254

15S650 15S652 15S654

7-3/4 [196.85] 7-3/4 [196.85] 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]

No. of

Bolts

12 18 12 18

No. of

Bolts

10 12 12 18

Yoke Boss

Hole Diam.

1-1/2 [38.10] 1-15/16 [49.21] 2-1/8 [53.98] 2-13/16 [71.44]

Yoke Boss

Hole Diam.

1-1/2 [38.10] 2-1/8 [53.98] 2-13/16 [71.44] 3-9/16 [90.49]

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 specications.

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.

SENIOR ACTUATOR IN [MM] Term.

Part

No.

No. X Y

231

15S631

233 251 253

15S633 15S651 15S653

10-5/8 [269.86] 13-3/8 [339.73] 10-5/8 [269.86] 13-3/8 [339.73]

17-13/16 [452.44] 22-9/32 [565.94] 17-13/16 [452.44] 22-9/32 [565.94]

For reference only; not for construction.

No. of

Bolts

12 18 12 18

Yoke Boss

Hole Diam.

1-1/2 [38.10] 1-1/2 [38.10] 2-1/8 [53.98] 2-13/16 [71.44]

COLLAR

RANGE

INDICATOR

VEL

PUSH-TO-CLOSE VALV E

PUSH-TO-OPEN VALV E

VALVE BODY DIMENSION

INPUT CONN.

1/4˝ FEMALE NPT

Figure 3: Mounting dimension for air-to-lower actuator

STANDARD ACTUATOR IN [MM] Term.

Part

No.

No. X Y

220

15S620

222

15S622

240

15S640

242

15S642

244

15S644

OPERATION

Check Valve Travel - The actuator spring has been selected 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.

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.

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]

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]

No. of

Bolts

10 12 10 12 18

Yoke Boss

Hole Diam.

1-1/2 [38.10] 1-15/16 [49.21] 2-1/8 [53.98] 2-13/16 [71.44] 2-13/16 [71.44]

Adjusting Actuator Range Note: When using this procedure, be sure that the valve is operating under normal

line pressure conditions.

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

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, counterclockwise 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.

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

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.

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

ADJUSTING

SCREW

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 specied 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.

TRAVEL

INDICATOR

VALVE PLUG TRAVEL

TRAVEL

MARK

Figure 5: Travel indicator plate showing valve plug travel

TRAVEL

MARK

VALVE PLUG TRA

TRAVEL

RANGE

ADJUSTING

SCREW

AIR-TO-LOWER

Figure 6: Adjusting actuator range

MAINTENANCE

Test Equipment and Tools Required - The only test equipment required for valve and actuator maintenance is an air supply source, gage and regulator. The tools required are shown in Table 4.

TOOLS REQUIRED

Actuator Size Tool Size Use

All Screwdriver 3/16˝ Travel indicator plate

Open End Wrenches

1/4˝ 1/2˝

9/16˝ 5/8˝

7/8˝ 1-1/4˝ 1-1/2˝ 1-15/16˝

9/16˝ 11/16˝ 13/16˝ 31/32˝ 1˝

Table 4

TRAVEL

STOP

AIR-TO-RAISE

Diaphragm casing mounting screw and

nut

Range spring adjusting screw

Actuator push rod

TRAVEL

STEM LOCKNUT

INDICATOR

PLATE

TRAVEL

INDICATOR

LVE STEM

Figure 7: Adjusting Valve Plug Travel

Adjusting Valve Plug Travel - The purpose of this procedure 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.

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

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.

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

closed.

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.

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

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 through 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.

Replacing Actuator Diaphragm

WARNING

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

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

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.

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

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

Before attempting any maintenance on control valve, make sure valve has been relieved of all pressure.

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

PLIERS

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

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.

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.

Changing Actuator Range Spring

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

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

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.

CAUTION

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.

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

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

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.

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

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

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

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

DIAHRAGM CASING

DIAPHRAGM

DIAPHRAGM CASING

MTG WASHER

MTG SCREW

PUSH PLATE

RANGE SPRING

SPRING SEAT

RANGE SPRING

ADJUSTING SCREW

UPPER BEARING

RACE

LOWER BEARING

RACE

DIAPHRAGM

CASING MTG NUT

YOKE AND

LOWER DIAPHRAGM

CASING

VALVE STEM

RETAINING RING

O-RING

BEARING RING

PUSH ROD

STEM LOCKNUT

VALVE BODY

SPRING CASING

DIAPHRAGM

DIAPHRAGM CASING

SPRING AND

DIAPHRAGM

CASING

BEARING RING

O-RING

UPPER BEARING

RACE

LOWER BEARING

RACE

MTG SCREW

MTG WASHER

RANGE SPRING

ADJUSTING SCREW

RANGE SPRING

LOCKING WASHER

PUSH ROD

RETAINING RING

SPRING SEAT

LOCKING NUT

PUSH PLATE

VALV E

VALVE BODY

STEM

DIAPHRAGM

CASING MTG NUT

YOKE

DWYER INSTRUMENTS, LLC

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.

Phone: 219-879-8000

Fax: 219-872-9057

www.dwyer-inst.com

e-mail: info@dwyermail.com

Dwyer 2000VA32-230, 2000VA42-230, 2001VA32-230, 2001VA32-231, 2001VA42-230 Manual

Specifications and Main Features

Frequently Asked Questions

User Manual