forbes marshall pneumatic actuator · the forbes marshall pneumatic actuators can be opened or...

Forbes Marshall Pneumatic ActuatorSeries MSP and SSP

Protective capActuator housing

Spring

Diaphragm plateDiaphragm

‘O’ ring

Actuator spindle

Yoke

Stroke scanning lever

Lift plate

The Forbes Marshall pneumatic actuators can be opened or closed using spring force or control air. These actuators are field reversible and available with either single spring or multi spring options. The compressed spring ensures that the pneumatic actuator always achieves fail safe condition on air failure without any additional intervention.

The actuator positions the control valve plug upon receipt of proportional signal through the positioner. These can be operated in Air to Open (ATO) function or with reverse action Air to Close (ATC) function. Multi-Spring Actuator (MSP) has additional advantage of compact design with low installation height, which is preferred by Industry.

Forbes Marshall Pneumatic DiaphragmActuator

Multi Spring Actuator (MSP Series)

Cap

Adjustment bolt

Spring

Diaphragm

Diaphragm plate

Actuator spindle

Yoke

Lift plate

Single Spring Actuator (SSP Series)

Optional -40ºC to 80ºC (-4ºF to 170ºF)

Max. allowable pressure 6 Bar (87 psig)

Air supply connection ¼” NPT (½" available on request)

Actuator Travel

mm 20 30 60 100 120

MSPInch 0.8 1.2 2.4

— —

SSP 3.9 4.7

Temperature range -20ºC to 80ºC (-4ºF to 170ºF)

MSP Series - Features

The yoke of the FM MSP Series actuator has a precision internal integrated path for passage of instrument air to the actuator diaphragm through the actuator housing.

This advanced technology eliminates the need for any additional tubing for mounting the positioner on the yoke, thereby arresting extra impulse tube leakages, chances of damage during transit, it allows high operational reliability, precision and serviceability.

This design hence reduces maintenance costs for the user.

Stroke scanning lever

Yoke with Integral Duct Stroke Scanning Lever

The positioner shaft engages with the stroke scanning lever of the actuator (as shown in the diagram), thereby eliminating the need for external linkages.

This design improves operational reliability, precision and serviceability.

The MSP series pneumatic actuator allows easy reversal of the actuator at site with minimum manual intervention and without opening the actuator housing. Special plugs for aerating and bleeding ensure the highest possible protection against ingress of water and dust particles into the actuator housing.

Field Reversible at Site

Fig. A (Air to Open) Fig. B (Air to Close)

Air In

Air In

Diaphragm

Airinlet

MSP Series Cross Sectional View

1

2

3

4

5

6

7

8

9

101112

13

17

18

14

51

52

53

54

55

56

57

58

61

62

60

59

63

64

65

66 67

15

16

19

MSP Series Parts List

Spare parts

Available spares are common for both Air to Open and Air to Close actuators

Spare kit 14, 18, 19, 53, 59, 60, 61, 62

Repair kit 18, 19, 53, 59, 60, 61, 62, 63, 64

Sr. No. Component Material of Construction

Handwheel

1 Rod/Tie Rod SS410

2 Intermediate Coupler SS304

3 Stopper SS410

4 Guiding Coupler AL. Bronze

5 Snap ring Spring Steel

6 DuBush Steel+PTFE

7 Needle roller bearing Chrome Steel

8 Locking Clutch SS 304

9 Snap ring Spring Steel

10 Spindle SS410

11 Locator Ring SS304

12 Hex Bolt A193 B8

13 Outer Coupler SS304

14 Rod Seal Polyurethane

15 BSP Connector SS304

16 Air Cap with Vent Hole Polypropelene

17 Actuator Ring SS410

18 O Ring Nitrile Rubber


Actuator

51 Spring Housing Carbon Steel-CRCA14

52 Spring Spring Steel

53 Diaphragm Nitrile Rubber

54 Diaphragm Plate Carbon Steel-CRCA14

55 Bush SS410

56 Hex Bolt A193 B8

57 Cup SS 440C

58 Cover Carbon Steel-CRCA14



61 DuBush Steel+PTFE

62 Rod Seal Polyurethane

63 Nut Support SS 316 Ti

64 Spindle SS410

65 Lever A 351 CF8

66 Support SG Iron

67 Lift Plate SS304

Multi Spring Actuator (MSP Series)

E

E+

HW

D

Dimensions and Weight

Actuator

Model

Stroke E E+HW DWeight

with HW

mm/inch kgs/lbs

MSP-1 346/13.6 493/19.4 270/10.6

MSP-230/1.2 489/19.3 651/25.6 400/15.7 42 / 92

60/2.4 625/24.6 888/34.9 400/15.7 47 / 103

20/0.8

30/1.2

14 / 31

16 / 35

Air to Open

Air to Close

Actuator Model Diaphragm Area (cm²/inch²)MSP-1-20

320 / 49.6MSP-1-30

MSP-2-30720 / 111.6

MSP-2-60

Actuator Model

Stroke No of springs

Minimum Air Pressure

Bar / psig

2 / 29 3 / 43.5 4 / 58 5 / 72.5 6 / 87

mm/inch Bar / psig Control Force Kgf / Lbf

MSP-1-20 20 / 0.83 1.5 / 21.7 163 / 360 490 / 1079 816 / 1798 1142 / 2518 1469 / 3238

6 3 / 43.5 326 / 720 653 / 1439 979 / 2158

MSP-1-30

30 / 1.2

3 1.5 / 21.7 163 / 360 490 / 1079.2 816 / 1798 1142 / 2518 1469 / 3238

6 3 / 43.5 326 / 720 653 / 1439 979 / 2158

MSP-2-30

3 1.5 / 21.7 367 / 809 1101 / 2428 1836 / 4046 2570 / 5666 3304 / 7284

6 3 / 43.5 734 / 1619 1468 / 3237 2203 / 4856

9 3.7 / 53.6 224 / 495 959 / 2113 1693 / 3733

12 4.4 / 63.8 439 / 967 1173 / 2586

MSP-2-60 60 / 2.4

3 1.5 / 21.7 367 / 809 1101 / 2428 1836 / 4046 2570 / 5666 3304 / 7284

6 3 / 43.5

734 / 1619 1468 / 3237 2203 / 4856

9 3.6 / 52.2 296 / 652 1030 / 2271 1764 / 3889

12 4.3 / 62.3 510 / 1124 1244 / 2743

ModelStroke

No of springs

Air Pressure RangeControl Force

from to

mm/inch

Bar / psig Kgf / Lbf

MSP-1-20 20 / 0.83 0.8 / 11.3 1.5 / 21.7 245 / 540

6 1.5 / 21.7 3 / 43.5 489 / 1079

MSP-1-30 (Pre-Loading)

30 / 1.2

3 1 / 14.5 1.5 / 21.7 337 / 742

6 2 / 29 3 / 43.5 663 / 1461

MSP-1-303 0.8 / 11.3 1.5 / 21.7 245 / 540

6 1.5 / 21.7 3 / 43.5 489 / 1079

MSP-2-30

3 0.7 / 10.2 1.5 / 21.7 510 / 1124

6 1.5 / 21.7 3 / 43.5 1020 / 2248

9 1.8 / 26.1 3.7 / 53.6 1326 / 2923

12 2.2 / 31.9 4.4 / 63.8 1632 / 3597

MSP-2-60 (Pre-Loading)

3 1.1 / 15.9 1.5 / 21.7 816 / 1799

6 2.2 / 31.9 3 / 43.5 1632 / 3597

9 2.7 / 39.2 3.6 / 52.2 1938 / 4271

12 3.1 / 45 4.3 / 62.4 2345 / 5170

MSP-2-60 60 / 2.4

3 0.7 / 10.2 1.5 / 21.7 510 / 1124

6 1.4 / 20.3 3 / 43.5 1020 / 2248

9 1.7 / 24.6 3.6 / 52.2 1224 / 2698

12 2 / 29 4.3 / 62.4 1428 / 3148

SSP Series - Features

An adjustment bolt has been used to adapt the spring pre-load with actuating forces required with pinpoint accuracy. FM SSP Series of actuators come with different centric springs and spring ranges which allow a very broad range of actuating forces to be optimally set. The setting is possible at site as well.

High accuracy is achieved by rotating the adjustment bolt after opening the actuator cap. The bolt can be rotated both clockwise and anti-clockwise depending on requirement. This is possible on-line as well.

Spring Range Adjustable At Site Aluminium Housing

The actuator housings are made from high grade aluminium which protects it from atmospheric corrosion. This feature allows the SSP series actuator to be used for marine environments.

Aluminium construction makes this actuator extremely lightweight as well.

The SSP series pneumatic actuator allows easy reversal at site with minimum manual intervention and without opening the actuator housing. Special plugs for aerating and bleeding ensure the highest possible protection against ingress of water and dust particles into the actuator housing.

Field Reversible at Site

Fig. A (Air to Open) Fig. B (Air to Close)

Air In

Air In

Housing

Adjustment Bolt

SSP Series Cross Sectional View

1

2

3

6

7

21

22

23

24

25

26

27

28

29

30

31

32

33

34

36

35

37

39

8

38

4

5

SSP Series List of Parts

Spare parts

Available spares are common for Air to Open and Air to Close actuators

Spare kit 21, 25, 31, 35

Repair kit 21, 25, 26, 30, 31, 32, 35, 37

Sr. No. Name of Part Material of Construction

Handwheel

1 Handwheel Alumunium Alloy

2 Castle Nut A194 Gr 4

3 Split Pin SS304

4 Bush SG Iron

5 Needle Roller Bearing Set Chrome Steel

6 Spindle A276 SS410

7 Clamp Ring C20/AISI 1020

8 Handwheel Support Alumunium Alloy

Actuator

21 Slide Bearing Bronze Filled Ptfe

22 Needle Roller Bearing Set Chrome Steel

23 Adjustment Bolt A276 SS410,

24 Spring Plate Gray Cast Iron

25 O-ring Silicone Rubber

26 Spring Spring Steel

27 Spring Housing Alumunium Alloy

28 Diaphragm Cover Alumunium Alloy

29 Spindle A276 SS410

30 Hex Hd Bolt A194 Gr 4, Zinc Plated

31 Diaphragm Nitrile Rubber

32 Diaphragm Plate Alumunium Alloy

33 Diaphragm Housing Alumunium Alloy

34 Hex Lock Nut A194 4, Zinc Plated

35 O Ring Silicone Rubber

36 Hex Hd. Bolt Full Threaded A193 B8

37 Bush A276 SS410

38 Lift Plate A276 SS304

39 Support SG Iron

E

D

E+

HW

Single Spring Actuator (SSP Series)

Dimensions and Weight

Actuator

Model

Stroke E E+HW D Weightwith HW

mm/inch kgs/lbs

SSP-120/0.8 495/19.5 630/24.8 270/10.6

19 / 4230/1.2 505/19.9 640/25.2 392/15.4

SSP-230/1.2 723/28.5 920/36.2 392/15.4

49 / 10860/2.4 753/29.6 950/37.4 530/20.8

SSP-360/2.4

1006/39.6 1323/52.0 530/20.8 105 / 231100/4

Actuator Model

SSP-1-20/30

SSP-2-30/60

SSP-3-60/100/120

Diaphragm Area (cm²/inch²)

320 / 49.6

720 / 111.6

1440 / 223.2

Opening Function (Air to Open-Spring to Close)

Actuator Model

Spring Range Control force

from to

Bar / psig Kgf / Lbf

SSP-1-20/30-S

0.2 / 2.9 1 / 14.5 60 / 1320.4 / 5.8 1.2 / 17.4 125 / 2760.6 / 8.7 1.4 / 20.3 185 / 4080.8 / 11.6 1.6 / 23.2 250 / 5511 / 14.5 1.8 / 26.1 310 / 683

SSP-1-20-R

1.2 / 17.4 2.25 / 32.6 370 / 8161.4 / 20.3 2.45 / 35.5 435 / 9591.6 / 21.7 2.65 / 38.4 500 / 11021.8 / 26.1 2.25 / 32.6 560 / 1235

SSP-1-30-R1.2 / 17.4 2.8 / 40.6 370 / 8161.4 / 20.3 3 / 43.5 435 / 959

SSP-2-30-S

0.2 / 2.9 1 / 14.5 140 / 3090.4 / 5.8 1.2 / 17.4 280 / 6170.6 / 8.7 1.4 / 20.3 425 / 9370.8 / 11.6 1.6 / 23.2 565 / 12461 / 14.5 1.8 / 26.1 705 / 1554

SSP-2-30-R

1.2 / 17.4 2 / 32.6 845 / 18631.4 / 20.3 2.2 / 35.5 985 / 21721.6 / 21.7 2.4 / 38.4 1130 / 24911.8 / 26.1 2.6 / 32.6 1270 / 2800

2 / 29 2.8 / 40.6 1410 / 31092.2 / 31.9 3 / 43.5 1550 / 3417

SSP-2-60-S

0.2 / 2.9 1 / 14.5 140 / 3090.4 / 5.8 1.2 / 17.4 280 / 6170.6 / 8.7 1.4 / 20.3 425 / 9370.8 / 11.6 1.6 / 23.2 565 / 1246

SSP-2-60-R1 / 14.5

2.6 / 32.6

705 / 1554

1.2 / 17.4 2.8 / 40.6 845 / 18631.4 / 20.3

3 / 43.5 990 / 2183

SSP-3-60-S

0.2 / 2.9 1 / 14.5 280 / 6170.4 / 5.8 1.2 / 17.4 565 / 12460.6 / 8.7 1.4 / 20.3 845 / 18630.8 / 11.6 1.6 / 23.2 1130 / 24911 / 14.5 1.8 / 26.1 1410 / 3109

SSP-3-60-R

1.2 / 17.4 2.45 / 32.6 1690 / 37261.4 / 20.3 2.65 / 35.5 1975 / 43541.6 / 21.7 2.85 / 38.4 2255 / 4971

1.75 / 26.1 3 / 32.6 2465 / 54342.4 / 34.8 4.5 / 65.2 2800 / 61732.9 / 42 4.55 / 66 3000 / 6614

SSP-3-100-S0.2 / 2.9 1 / 14.5 280 / 6170.4 / 5.8 1.2 / 17.4 565 / 12460.6 / 8.7 1.4 / 20.3 845 / 1863

SSP-3-100-R0.8 / 11.6 2.8 / 40.6 1130 / 24911 / 14.5 3 / 43.5 1410 / 3109

SSP-3-120-S

0.2 / 2.9 1 / 14.5 280 / 6170.4 / 5.8 1.2 / 17.4 565 / 12460.6 / 8.7 1.4 / 20.3 845 / 18630.8 / 11.6 2.8 / 40.6 1130 / 24911 / 14.5 3 / 43.5 1410 / 3109

SSP-3-120-R0.2 / 2.9 1.2 / 17.4 250 / 5510.4 / 5.8 1.5 / 21.7 650 / 14330.6 / 8.7 3.0 / 43.5 840 / 1852

Closing Function (Air to Close-Spring to Open)

Actuator Model

Stroke (mm/inch)

Spring Range

Bar / psig

2.8 / 40.6 3 / 43.5 3.5 / 50.7 4 / 58 4.5 / 65.2 5 / 72.5 5.5 / 79.7 6 / 87

Control Force Kgf / Lbf

SSP-1-20/30 20/0.8 30/1.10.2-1 bar

560 / 1235 620 / 1367 776 / 1710.8 930 / 2051 1085 / 2392 1240 / 2734 1395 / 3076 1550 / 3417

SSP-2-30/60 30/1.1 60/2.4 1270 / 2800 1410 / 3109 1760 / 3880 2115 / 4663 2470 / 5446 2820 / 6217 3170 / 6989 3525 / 7772

3-15 psigSSP-3- 60/100/120

60/2.4 100/3.9 120/4.7

2540 / 5600 2820 / 6217 3525 / 7772 4230 / 9326 4935 / 10880 5640 / 12434 6345 / 13989 7050 / 15543

Multi Spring Actuator

Maximum allowable differential pressure for metal seated valves with parabolic trim for Class IV shutoff

F1100 & F1200 Series

Air to Open

Actuator Model

Air Pressure Range

1/2” 1” 1 1/2” 2” 2 1/2”

PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite

Bar g / psig

MSP 1-20

0.8-1.5 11.6-21.7

50/725.2 50/725.2

1.5-3.0 21.7-43.5

50/725.2 50/725.2 38/551.2 32/464.2 21/304.5 18/261 18/261 15/217.5

Actuator Model

Air Pressure Range

3” 4” 6” 8”

PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite

Bar g / psig

MSP 1-301.5-3.0

21.7-43.56/87 4/58 3.5/50.7 2.2/31.9

MSP 2-302.2-4.4

31.9-63.828/406.1 26/377 17.7/256.7 16.5/239.3

MSP 2-602.0-4.3

29.0-62.38.2/118.9 7.5/108.7 4.2/60.9 3.8/55.2

Air to Close

Actuator Model

Air Pressure

Range

Air supply

1/2” 1” 1 1/2” 2” 2 1/2”


Bar g / psig

MSP 1-20 0.8-1.5

11.6-21.7

3 / 43.5 50/725.2 50/725.2 50/725.2 50/725.2 37.7/546.7 32/464.2 21.5/311.8 17.8/258.2 17.9/259.6 15/217.5

4.5 / 65.3 50/725.2 50/725.2 50/725.2 50/725.2 50/725.2 50/725.2 50/725.2 45/652.6 42.3/613.5 39/565.6

6 / 87 50/725.2 50/725.2 50/725.2 50/725.2 50/725.2 50/725.2 50/725.2 50/725.2 50/725.2 50/725.2

Actuator Model

Air Pressure

Range

Air supply

3” 4” 6” 8”

PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite

Bar g / psig

MSP 1-30

0.8-1.5 11.6-21.7

3 / 43.5 5.8/84.2 3.6/52.2 3.5/50.7 1.8/26.1

4.5 / 65.3 15.6/226.2 13.2/191.5 9.6/139.2 8.2/118.9

6 / 87 25.2/365.5 23/333.5 15.7/227.7 14.5/210.3

MSP 2-30

3 / 43.5 18/261 16/232 11/159.5 9.5/137.7

4.5 / 65.3 40.3/584.5 38/551.2 25.4/368.4 23.5/340.8

6 / 87 50/725.2 50/725.2 38.5/558.4 37/536.6

MSP 2-605/72.5 4.2/60.9 3/43.5 2.6/37.7

10.8/156.6 10/145 7.3/105.8 7/101.518.2/263.9 17.5/253.8 11.5/166.7 11/159.5

F1300 Series

Air to Open

Actuator Model

Air Pressure

Range

1” 1 1/2” 2” 3” 4” 6” 8”

PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite

Bar g / psig

MSP 1-201.5-3.0

21.7-43.5 80.1 / 1161.7

61 / 884.7

31.6 / 458.3

22 / 319

MSP 1-301.5-3.0

21.7-43.5

16.8 / 243.6

13 / 188.5

6.3 / 91.3

4.8 / 69.6

3.8 / 55.1

2.7 / 39.2

MSP 2-302.2-4.4

31.9-63.878.7 / 1141.4

75 / 1087.8

33.1 / 480

31.5 / 456.8

21.4 / 310.3

20 / 290

MSP 2-602.0-4.3

29.0-62.3

8.6 / 124.7

7.5 / 108.7

4.2 / 60.9

3.8 / 55.2

DOC#FMAINTOPS/0217/1008/V3.R0

Email : , [email protected] [email protected]

480,California Avenue,Suite 102,P.O. Box 60670Palo Alto CA 94306California, USATel: +1 650 327 4227/ +1 650 321 4224Fax: +1 650 327 4127/ +1 650 321 4454

Forbes Marshall Canada Inc.2425 Matheson Blvd East, 8th FloorMississauga, ON L4W 5K4Tel: +1 905 361 2880Fax: +1 905 361 6401

A-34/35, MIDC H BlockPimpri, Pune - 411 018. INDIA.Tel : 91(0)20-27442020, 39851199Fax : 91(0)20-27442040

www.forbesmarshall.com

CIN No.: U28996PN1985PTC037806

© All rights reserved. Any reproduction or distribution in part or as a whole without written permission of Forbes Marshall Pvt Ltd, its associate companies or its subsidiaries (“FM Group”) is prohibited.

Information, designs or specifications in this document are subject to change without notice. Responsibility for suitability, selection, installation, use, operation or maintenance of the product(s) rests solely with the purchaser and/or user. The contents of this document are presented for informational purposes only. FM Group disclaims liabilities or losses that may be incurred as a consequence of the use of this information.

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Forbes Marshall Arca

Codel International

Forbes Solar

Forbes Vyncke

Forbes Marshall Steam Systems

Single Spring Actuator Maximum allowable differential pressure for metal seated valves with parabolic trim for Class IV shutoff

Air to Close

Actuator Model

Air Pressure Range

Air supply

1” 1 1/2” 2” 3” 4” 6” 8”

PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite PTFE Graphite

Bar g / psig

MSP 1-20

0.8-1.5 11.6-21.7

3 / 43.580.1 / 1161.7

74 / 1073.2

31.8 / 461.2

24 / 348

4.5 / 65.3160 /

2320.6160 /

2320.676.4 / 1108

70 / 1015

6 / 87160 /

2320.6160 /

2320.6121.1 / 1756.4

113 / 1639

MSP1-30

3 / 43.5

16.8 / 243.6

13 / 188.5

6.3 / 91.4

4.5 / 65.3

3.6 / 52.2

2.6 / 37.7

4.5 / 65.343.4 / 629.5

40 / 580.2

17.8 / 258.2

16 / 232

11.3 / 163.9

10.5 / 152.3

6 / 8769.9 /

1013.866 /

957.329 /

420.627.5 / 398.8

18.5 / 268.4

17.5 / 253.8

MSP 2-30

3 / 43.550.5 / 732.4

46 / 667.2

20.5 / 297.3

19 / 275.5

13 / 188.5

12 / 174

4.5 / 65.3111.9 / 1623

108 / 1566.5

47.4 / 687.5

46 / 667.2

30.5 / 442.4

29 / 420.6

6 / 87160 /

2320.6160 /

2320.671 /

1029.769 /

1000.746.5 / 674.4

45.5 / 660

MSP 2-60

3 / 43.5

4.5 / 65.3

3.8 / 55.2

2.7 / 39.2

2.2 / 31.9

4.5 / 65.311.5 / 166.7

11 / 159.5

6.9 / 100

6.5 / 94.3

6 / 8717.8 / 258.2

17 / 246.5

10.9 / 158

10.5 / 152.3

F1300 Series

F1100, F1200, Series

Air to Open

Actuator Model

Spring TypeSpring Range

6” 8” 10” 12” 14”


Bar g / psig

SSP-3-60

Standard1.0-1.8

6.8/98.6 6.2/89.9 4.3/62.4 3.9/56.5

14.5-26.1

Reinforced 1.7-3.0

15.7/227.7 15/217.5 10/145 9.5/137.724.6-43.5

SSP-3-100

Standard 0.6-1.4

1/14.5 0.7/10.2 0.45/6.5 0.27/3.9 0.3/4.4 0.15/2.28.7-20.3

Reinforced1.0-3.0

2.5/36.3 2.1/30.5 1.3/18.8 1.1/15.9 1/14.5 0.8/11.614.5-43.5

Air to Close

Actuator Model

Spring Range

Air Supply

6” 8” 10” 12” 14”


Bar g / psig

SSP-3-60

0.2-1.0 2.9-14.5

3 / 43.5 15.5 / 224.8 14.7 / 213.210.5 / 152.3 9.8 / 142.2

4.5 / 65.3 29 / 420.6 28 / 406.1 19 / 275.5 18.5 / 268.3

6 / 87 41 / 594.6 40.5 / 587.4 27.5 / 398.8 27 / 391.6

SSP-3-100

3 / 43.5 6.1 / 88.5 5.8 / 84.2 3.6 / 52.2 3.4 / 49.3 2.9 / 42 2.7 / 39.2

4.5 / 65.3 11.7 / 169.7 11.4 / 165.3 7 / 101.5 6.7 / 97.2 5.7 / 82.6 5.5 / 79.7

6 / 87 17.1 / 248 16.8 / 243.6 10.2 / 147.9 10 / 145 8.4 / 121.8 8.2 / 118.9

forbes marshall pneumatic actuator · the forbes marshall pneumatic actuators can be opened or...

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