PN Series Pneumatic Actuator Brochure

Engineering Creative Solutions for Fluid Systems Since 1901

INDEX

General Overview ................................................................................................................................ 2   Features ................................................................................................................................................ 2   Parts List MOD63~MOD140 .............................................................................................................. 4   Parts List MOD160~MOD240 ............................................................................................................ 5   Technical data ...................................................................................................................................... 6   Actuator dimension (Inch) ................................................................................................................... 7   Dimension of MOD63~MOD140.................................................................................................... 7   Dimension of MOD160~MOD240.................................................................................................. 8   Actuator body drillings for solenoid mounting (Namur standard, mm (Inch) ) .................................. 9   Actuator top drillings for accessory mounting (Namur standard, mm (Inch) ) ................................... 9   Mounting flange dimension details (Inch)......................................................................................... 10   Operation principle of double acting actuator ................................................................................... 11   Double acting actuator torque output: ............................................................................................... 11   Operation principle of spring return actuator: ................................................................................... 12   Spring returen actuator torque output MOD SR63 ~SR140 .............................................................. 13   Spring returen actuator torque output MOD SR160 ~SR240 ............................................................ 14  

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Pratt Industrial

PRATT INDUSTRIAL PNEUMATIC RACK & PINION ACTUATORS General Overview

Designed and manufactured for the ultimate in durability and reliability, the Pratt Industrial Pneumatic Rack & Pinion Actuators provide outstanding service life. • • • • • • • • • • • • • • • • •

Compact Rack & Pinion Design utilizing the whole piston area develop output torque. Quarter-Turn Operation Designed for use on a variety of valve types: ball valves, butterfly valves, plug valves dampers.etc. Hard anodized aluminum bod. Chromate corrosion protection on all aluminum components. Suitable for indoor and out door installation. Adjustable travel double stops. 90 degrees +/- 5 degrees Double acting type torque outputs from in-lbs to in-lbs with an 80 psi air supply. All moving parts are factory lubricated. No additional lubrication required. Removable/ replaceable drive inserts. Pre-loaded spring assemblies. ISO 5211 valve mounting. NAMUR (VDI/VDE) accessory mounts. Anti Blow-Out pinion design Maximun pressure rating: 116 psi. Compatible media: clean, dry air, filtered noncorrosive gas or light hydraulic oil. Mounting dimensions are KV standards and ISO standards for direct mounting capabilities.

Features •

•

•

• •

•

•

• •

The hard anodized actuator body, along with the control modules, are protected from corrosive environments with a protective finish that has passed a 1,000 hour-salt spray test per ASTM B117 Die cast aluminum end caps with polyester powder coat finish. Using the same end caps on both SR and DA actuators allows customers to lower inventory costs and give quick interchangeability allowing customer to convert SR units to DA units by adding Springs only. Die casting aluminum piston.The precision-machined rack is chrome plated for optimal performance. It has a three point guiding system for moving stable and extended service life. High qualified seamless O-rings for air-tight sealing and long service life. Anti Blow out pinion design. Superior stability and field safety spring package (sizes 63 through 140). The PN series pneumatic actuator utilizes two embedded springs, an inner and outer springs allowing for five different spring torques. The design also allows equal and evenly distributed force to each piston extending service life. The encapsulated spring package, with corrosion-protected, can be easily-disassembled with a standard Allen wrench for conversion of double-acting to spring-return configuration on sizes 63 through 140. Anti-friction housing guide band ensures no metal to metal contact and provides wear protection between housing and piston for extended service life. Ideal for modulating or on/off control applications. All hardwares are 304 stainless steel. Cycle life is more than 500,000 cycles.

Pratt Industrial

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ANTI-BLOWOUT SYSTEM

MOUNTING VARIATIONS Closed

Opened

Piston provided with anti-blowout flat key

Counterclockwise Rotation

Cloockwise Rotation View from the top of the pinion

Bi-directional travel stops -

Adjustable stops on the center of the body provide the flexibility of accurate valve rotational positioning at the end of the 'open' and 'close' stroke. The total travel of 100 degrees allows for end of travel adjustment of 5 degrees at both open and close positions. Travel stops must not be used for manual override purposes. Travel stops on actuators with reverse action require special build and must be specified at time of ordering.

All views illustrated in the open position

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Pratt Industrial

PARTS LIST MOD63-MOD140

Item

Part Name

QTY

Material

Standard

Protection

Optional Material

1

Body

1

Extruded

ASTM 6000

Hard anodized

--

2

Pinion

1

Carbon steel

ASTM 1045

Nickel plated

Aluminum

3

Piston

2

Die casting

ASTM A380

Chromatized

4

End cap

1

Die casting

ASTM A380

Powder Coating

5

End cap

1

Die casting

ASTM A380

Powder Coating

6

Cam

1

Stainless steel

ASTM 304

7

Washer

1

POM

8

Washer

1

POM

Viton/silicone PTFE

9

Guide band

1

POM

PTFE

10

O-ring

2

NBR

Viton/silicone

11

Bearing

2

POM

PTFE

12

O-ring

2

NBR

Viton/Silicone

13

O-ring

1

NBR

Viton/silicone

14

O-ring

1

NBR

Viton/silicone

15

Spring

0-2

Spring steel

16

Nameplate

1

Adhesive

17

Indicating

2

ABS

18

Cap Bolt

8

Stainless steel

ASTM 304

19

Washer

1

Stainless steel

ASTM 304

20

Spring Clip

1

Stainless steel

ASTM 304

21

Stop Bolt

2

Stainless steel

ASTM 304

22

Nut

2

Stainless steel

ASTM 304

23

Washer

1

Stainless steel

ASTM 304

Spring steel

Dip coating

Pratt Industrial

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PARTS LIST MOD160-240

Item

.

I

Part

Q

Material

Standard

Protection

Option

1

Body

1

Extruded Aluminum

ASTM 6000

Hard anodized

2

Piston

2

Die casting aluminum

ASTM A380

Chromatized

3

Pinion

1

Carbon steel

ASTM 1045

Nickel plated

4

End cap

2

Die casting aluminum

ASTM A380

Powder polyster

5

Spring

0-12

Spring steel

Spring steel

Dip coating

6

Cam

1

Stainless

ASTM 304

7

Bearing

2

POM

PTFE

8

O-ring

2

NBR

Viton/Silicone

9

O-ring

2

NBR

Viton/silicone

10

Guide band

4

POM

PTFE

11

O-ring

1

NBR

Viton/silicone

12

Bearing

1

POM

PTFE

13

O-ring

1

NBR

Viton/silicone

14

Washer

1

Nylon

15

Washer

1

Stainless steel

ASTM 304

16

Spring clip

1

Stainless steel

ASTM 304

17

O-ring

2

NBR

18

Washer

2

Stainless steel

ASTM 304

19

Nut

2

Stainless steel

ASTM 304

20

Stop Bolt

2

Stainless steel

ASTM 304

21

Cap Bolt

8

Stainless steel

ASTM 304

22

O-ring

2

NBR

Pratt Industrial

--

Aluminum

PA66

Viton/silicone

TECHNICAL DATA

Max. supply pressure: 145PSI Rated supply pressure:

120 PSI

Output torque @80 PSI: Double acting models:

up to 56,552 In-lbs

Spring return models:

up to 20,356 In-lbs

Temperature range: Standard Temp:

-4°F to 180°F (NBR)

High Temp:

-4°F to 250°F (Viton)

Low Temp:

-40°F to 180°F (Silicone)

Actuator weight (lb.) MOD  

63  

85  

100  

125  

140  

160  

190  

210  

240  

270  

300  

350  

DA  

3.3  

7.5  

11.1  

22.1  

35.7  

43.7  

72.8  

106  

152  

220  

249  

295  

SR  (Full  Springs)  

4.0  

9.5  

14.5  

29.6  

48.5  

77.2  

99.2  

126  

179  

267  

298  

373  

Actuator operating time (Second) MOD   DA   SR  

63  

85  

100  

125  

140  

160  

190  

210  

240  

270  

300  

350  

Open  

0.06  

0.20  

0.30  

0.83  

1.20  

1.50  

2.00  

2.70  

3.50  

4.00  

5.00  

6.00  

Close  

0.08  

0.19  

0.27  

0.66  

1.30  

1.70  

2.20  

3.20  

4.00  

4.50  

5.70  

7.00  

Open  

0.14  

0.31  

0.44  

1.08  

1.80  

2.10  

2.40  

3.50  

4.10  

4.50  

6.40  

7.50  

Close  

0.14  

0.33  

0.46  

0.90  

1.60  

1.80  

2.80  

3.90  

4.60  

5.00  

7.60  

8.50  

The  above  approximated  actuator  operating  time  are  obtained  at  the  pressure  of  6  Bar  without  load.  

Actuator air consumption (L) MOD  

63  

85  

100  

125  

140  

160  

190  

210  

240  

270  

300  

350  

Open  

0.19  

0.51  

0.79  

1.63  

2.40  

3.10  

4.30  

5.90   10.00  

14.50  

23.80  

36.00  

Close  

0.23  

0.64  

1.00  

2.21  

3.80  

4.90  

6.90  

9.50   15.20  

21.40  

38.10  

45.00  

The  above  data  are  obtained  at  room  temperature.  

Pratt Industrial

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ACTUATOR DIMENSION (Inch) Dimension of MOD63~MOD240

Bottom o f shaft Mod

A

B

C

D

E

F

G

L

K

J

N

T

M

H

I

Key

63

7.32

3.23

3.97

2.91

－

－

0.039

0.157

0.79

1.12

0.56

0.38

1.32

－

－

－

4  X  3/8-­‐16 UNC  X0.5  DP

3.25

85

10.12

4.13

5.12

2.91

－

－

0.047

0.157

0.79

1.57

0.76

0.50

1.36

－

－

－

4  X  3/8-­‐16 UNC  X0.5  DP

3.25

100

11.81

4.84

5.87

3.46

－

－

0.047

0.157

0.79

1.83

0.76

0.50

1.36

－

－

－

4  X  3/8-­‐16   UNC  X0.5  DP  

3.25

125

15.35

5.87

7.44

4.33

－

－

0.059

0.157

1.18

2.3

－

－

1.36

1.25

1.13

0.25

4  X  3/8-­‐16  UNC  X0.5  DP  

3.25

4  X  1/2-­‐13  UNC  X0.625  DP  

5.00

4  X  3/8-­‐16  UNC  X0.5  DP  

3.25

4  X  1/2-­‐13  UNC  X0.625  DP  

5.00

4 1/2-­‐13  UNC  X0.625  DP

5.00

4  X  3/8-­‐16  UNC  X0.50  DP

3.25

140 160

17.66

19.06

6.54

7.74

8.34

8.86

4.41

4.41

－

6.22

－

6.89

0.059

0.08

0.157

0.157

1.18

1.18

2.69

1.97

－

－

－

－

2.00

2.00

1.25

1.25

1.13

1.13

0.25

0.25

NO X Size

PCD

190

21.73

9.09

10.31

4.57

6.97

8.11

0.08

0.157

1.18

2.34

－

－

2.90

1.52

1.38

0.32

4  X  1/2-­‐13  UNC  X0.625DP

5.00

210

23.26

9.90

11.34

6.14

8.07

8.98

0.08

0.157

1.18

2.62

－

－

3.60

2.06

1.88

0.50

4 X 3/4-10 UNC X1.00 DP

6.5

4 X 1/2-13  UNC  X0.625DP

5.00

4 X 3/4-10 UNC  X1.00  DP    

6.50

240

8

Mounting Holes

I

27.64

11.15

Pratt Industrial

12.76

6.22

8.86

10.24

0.12

0.157

1.18

2.8

－

－

3.60

2.06

1.88

0.50

Actuator body drillings for solenoid mounting (Namur standard, (Inch)) MOD 63-85

MOD 100-240

Actuator top drillings for accessory mounting (Namur standard, (Inch))

MOD63~85

MOD125~240

Pratt Industrial

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Mounting flange dimension details (Inch)

Bottom o f shaft Mod

N

T

H

I

Key

NO X Size

PCD(inch)

63  

0.56

0.38

－

－

－

4 X 3/8 16UNC X0.5DP

3.25

85  

0.76

0.50

－

－

－

4 X 3/8 16UNC X0.5DP

3.25

100  

0.76

0.50

－

－

－

4 X 3/8 16UNC X0.5 DP

3.25

125  

－

－

1.25

1.13

0.25

4 X 3/8 16 UNC X0.5DP

3.25

4 X 1/2 13 UNC X0.625DP

5.00

4 X 3/8 16 UNC X0.5 DP

3.25

4 X 1/2 13 UNC X0.625DP

5.00

4 X 1/2 13 UNC X0.625DP

5.00

4 X 3/8 16 UNC X0.5DP

3.25

140  

160  

I

－

－

－

－

1.25

1.25

1.13

1.13

0.25

0.25

190  

－

－

1.52

1.38

0.32

4 X 1/2 13 UNC X0.625DP

5.00

210  

－

－

2.06

1.88

0.50

4 X 3/4 10 UNC X1.00DP

6.50

4 X 1/2 13 UNC X0.625DP

5.00

4  X  3/4i 10  UNC  X1.00DP

6.50

240  

10

Mounting Holes

－

Pratt Industrial

－

2.06

1.88

0.50

OPERATION PRINCIPLE OF DOUBLE ACTING ACTUATOR

TOP VIEW

ñ

ñ

Rotation Closed position

Opened position

Torque

Closed position

90o +5o

90o 95o

Counterclockwise rotation

Clockwise

+5o

With reference to the above diagram it can be noted that the torque of a double acting actuator remains constant through-out the complete action. The user can decide on which model to choose according to his/her own specific requirements, using the following guidelines: 1. Define the maximum torque of the valve to automate. 2. To obtain a safety factor increase the torque value chosen by 25-50% (subject to the type of valve and working conditions). 3. Once the torque value suggested is obtained consult the torque chart and in relation to the corresponding air pressure find a torque value exact to or exceeding the one obtained. 4. Once the torque value is determined move horizontally to the column “model” to find the actuator model required.

Pratt Industrial

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DOUBLE ACTING ACTUATOR TORQUE OUTPUT:

MOD DA63 DA85 DA100 DA125 DA140 DA160 DA190 DA210 DA240 DA270 DA300 DA350

12

I

40

50

60

164 434 676 1468 2025 3174 4747 6959 10388 12921 17700 26161

205 543 845 1835 2531 3968 5934 8699 12985 15045 20523 31241

246 652 1014 2202 3038 4761 7121 10439 14226 20355 28010 41330

Pratt Industrial

Air Supply, PSI 70 80 Output torque, Inch LBS. 287 328 760 869 1184 1353 2568 2935 3544 4050 5555 6348 8308 9495 12179 13918 18179 20776 26550 29382 34515 37170 51480 56552

90

100

120

369 977 1522 3302 4557 7142 10681 15658 23373 31949 41330 53640

410 1086 1691 3669 5063 7935 11868 17398 25970 37259 48135 71623

492 1303 2029 4403 6076 9522 14242 20878 31164 42480 54959 81818

OPERATION PRINCIPLE OF SPRING RETURN ACTUATOR:

TOP VIEW

ñ Press air working/ Opening rotation Closed position

Springs working/Closing rotation

Opened position Opened position

Torque

Closed position

o

90

90

o

95o

+5o

Counterclockwise rotation

+5o

Rotation

Clockwise rotation

With reference to the above diagram the torque of a spring return actuator is not constant but decreasing. This is due to the action of the springs that when compressed during air actuation counteract the piston movement and accumulate energy which will be available in a decreasing way during the rotation inversion.The torque given by the actuator is defined by four fundamental values. Opening rotation (Press air working) o Torque output at closed position (0 )= Actuator torque deducts unfolded springs torque o Torque output at opened position (90 )= Actuator torque deducts compressed springs torque Closing rotation (Springs working) Torque output at opened position (90o)= compressed springs torque. Torque output at opened position (0o)= unfolded springs torque The user can decide on which model to chose according to his/her own specific requirements, using the following guidelines: 1. Define the maximum torque of the valve to automate. 2. To obtain a safety factor increase the torque value chosen by 25-50% (subject to the type of valve and working conditions). 3. Once the torque value suggested is obtained consult the torque chart and in relation to the corresponding air pressure find the torque value exact to or exceeding the one obtained, taking account of the lower value between the opening and closing positiion values. Once the torque value is determined, move horizontally to the column “model” to find the actuator model required. 4.

VALID FROM MOD. 63 TO MOD. 1 40

VALID FROM MOD. 160 TO MOD. 240 SPRING SETTING

SPRING SETTING

SET

EXTERNAL SPRING

INTERNAL SPRING

S1

1

1

S2

2

-

S3

1

2

S4

2

1

S5

2

2

SET

SPRINGS FOR EACH SIDE

S5 S6

2/3 3/3

S7 S8 S9 S10 S11

3/4 4/4 4/5 5/5 5/6

S12

6/6

Pratt Industrial

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SPRING RETURN ACTUATOR TORQUE OUTPUT MOD SR63~SR140 Air Supply, PSI

SPRING TORQUE (Inch  LBS)  

0

MOD SR63

SR85

SR100

SR125

SR140

14

I

40

60

70

80

90

100

120

Output Torque,Inch LBS 0

0

90

END

Start

S1

57

105

S2

68

132

S3

80

144

S4

91

171

S5

114

210

S1

144

263

S2

176

314

S3

201

S4

SPRING SET

50

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

90

0

90

0

90

0

90

0

90

0

90

0

90

Start

End

Start

End

Start

End

Start

End

Start

End

Start

End

Start

End

Start

End

107

100

189

141

159

73

178

114

219

155

166

102

207

143

248

184

289

225

155

75

196

116

237

157

278

198

319

239

173

77

214

118

255

159

296

200

388

367

173

476

337

585

497

370

450

282

559

391

668

499

776

608

232

421

419

231

528

340

636

448

745

557

854

665

471

233

580

342

688

451

797

559

527

242

414

S2

303

510

S3

333

S4

434

171

148

507

289

290

59

280

S5

603

431

772

600

543

336

712

505

881

674

573

682

441

851

610

1020

779

1189

948

393

669

621

345

790

514

959

684

1128

853

1297

1022

S5

484

828

699

355

868

524

1037

693

1207

862

S1

504

973

S2

597

1151

S3

710

2226

1564

2593

1931

S4 S5 S1

727

1352

S2

838

S3

963

262

1330

861

1697

1228

1817

684

1604

1051

1971

1418

1371

1492

830

1859

1197

803

1549

1399

653

1765

1387

2132

1387

2499

1754

2866

2121

1008

1947

1560

989

1927

989

2294

1356

2661

1723

1298

494

1804

1179

2311

1685

1527

1694

1004

2200

1511

2706

2017

1036

1941

1496

590

2002

1096

2508

1603

3015

2109

3521

2615

S4

1146

2116

1892

922

2398

1428

2904

1934

3411

2441

3917

2947

S5

1454

2705

2090

839

2596

1345

3102

1852

3608

2358

Pratt Industrial

0

90

399

S1

0

0

673

378

282

1014

776

1545

1201

3395

2456

4621

3371

SPRING RETURN ACTUATOR TORQUE OUTPUT MOD SR160~SR240 Air  Supply,  PSI  

SPRING TORQUE (Inch LBS)

MOD

SR160

SR190

2SR10

SR240

SPRING SET

40.0

50

60

70

80.0

90

100

120

Output  Torque,Inch  LBS  

0º

90º

0º

90º

0º

90º

0º

90º

0º

90º

0º

90º

0º

90º

0º

90º

0º

90º

END

Start

Start

End

Start

End

Start

End

Start

End

Start

End

Start

End

Start

End

Start

End

S5

1164

1732

2010

1442

2804

2235

3597

3029

S6

1397

2079

1777

1095

2571

1889

3364

2682

4158

3476

S7

1630

2425

1544

749

2338

1542

3131

2336

3925

3129

4719

3923

S8

1863

2772

2105

1196

2899

1989

3692

2783

4486

3576

5279

4370

6073

5163

S9

2095

3118

2666

1643

3459

2436

4253

3230

5046

4023

5840

4817

S10

2328

3465

2433

1296

3227

2090

4020

2883

4814

3677

5607

4470

7194

6057

S11

2561

3811

2994

1743

3787

2537

4581

3330

5374

4124

6961

5711

S12

2794

4158

2761

1397

3554

2190

4348

2984

5141

3777

6729

5364

S5

1729

2502

3018

2245

4205

3432

5392

4619

S6

2075

3003

2672

1745

3859

2932

5046

4118

6233

5305

S7

2421

3503

2326

1244

3513

2431

4700

3618

5887

4805

7074

5992

S8

2767

4003

3167

1931

4354

3117

5541

4304

6728

5491

7914

6678

S9

3113

4504

4008

2617

5195

3804

6382

4991

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Pratt Industrial

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Pratt Industrial

Emporia, Kansas Tel. 620-208-8100 Fax. 620-208-8111 www.prattindl.com © 2014 CAM Valve and Automation, LLC I Printed in the U.S.A. I PI-SY-1014