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Masoneilan 5A Series Double-Acting Cylinder Actuator Manual 

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© 2020 Baker Hughes Company. All rights reserved.

5.  Actuator Operation Change

If required, the actuator operation (valve closed when 

air pressure increases or valve open when air pressure 

increases) can be changed. Figure 5 shows on which 

side of the actuator the air tubing should be connected to 

achieve the desired actuation. Figure 5 shows an example 

of piping when using a volume tank.

Mount the handwheel on the yoke both the sides (higher 

diameter wheel installed opposite to actuator, and lower 

diameter wheel installed on the actuator side - see Figure 2). 
The handwheels can be easily removed by removing the 

toruarc ring (50). Also, after installing the handwheel, return 

the handwheel until the washer (51) hits the yoke lightly, and 

fix it with the handwheel lock (52) at that position.

Note:  When using the handwheel, simply loosen 

the handwheel lock (52) and rotate it. Also, 

the handwheels can be used as a valve 

limit stop by locking it in place.

6.  Installing the Handwheel

Figure 5

The actuator will always close the valve when the actuator stem is retracted.

CAUTION

Summary of Contents for Masoneilan 5A Series

Page 1: ...Masoneilan 5A Series Double Acting Cylinder Actuator for Rotary Valves Instruction Manual Rev A Baker Hughes Data Classification Public ...

Page 2: ...EQUIREMENTS FOR OPERATION OF OTHER EQUIPMENT AT THE SITE THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN EQUIPMENT NOR TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN CONNECTION WITH INSTALLATION OPERATION OR MAINTENANCE SHOULD FURTHER INFORMATION BE DESIRED OR SHOULD PARTICULAR PROBLEMS ARISE WHICH ARE NOT COVERED SUFFICIENTLY FOR THE CUSTOMER OPERATOR S PURPOSES TH...

Page 3: ... Baker Hughes Company All rights reserved Table of Contents Safety Precautions iv Introduction 1 Description 1 1 Actuator Disassembly 2 4 2 Maintenance 5 3 Reassembly 5 4 Actuator Adjustment 6 5 Actuator Operation Change 7 6 Installing the Handwheel 7 Parts Reference 8 ...

Page 4: ...t can lead to injury or death Total compliance with all DANGER WARNING and CAUTION notices is required for safe operation CAUTION DANGER WARNING This is the safety alert symbol It alerts you to potential personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or death Indicates a potentially hazardous situation which if not avoided could result in death or...

Page 5: ...double acting actuator offered for Globe Rotary Valves It offers high capacity while providing excellent seat leakage performance in both directions The ability to quick removal and replacement of the valve components during maintenance saves valuable plant downtime This manual is a supplementary explanation of the instruction manual regarding the installation removal and maintenance of the Double...

Page 6: ...or support to the actuator F Loosen the cap screw 36 and lock washer 37 holding the cylinder 71 and remove it G Remove the cylinder 71 from the yoke 33 H Loosen the lever cap screw 49 I Remove the packing flange stud nut 13A J Install the lift or support on the yoke 33 K Loosen the body stud nut 27 L Remove the yoke from the body M Refer to Figure 4 to determine the desired mounting position of th...

Page 7: ...er Actuator Manual 3 2020 Baker Hughes Company All rights reserved 1 Actuator Disassembly Cont see Figures 1 3 Remove the yoke 33 lever 34 and packing flange 14 together WARNING Figure 1 Figure 2 Travel indicator dot Mark on yoke for assembly ...

Page 8: ...assembly Cont see Figures 1 3 Figure 3 Note The actuator is always mounted on the left side of the yoke with the valve closed when the actuator stem retracts Installation is limited to the locations shown Mounting positions limited to 2 only Figure 4 F T C F T O Plug Position ...

Page 9: ... 17 E Make sure that the groove on the packing flange 14 fits into the packing flange stud 13 F With the packing flange on the shaft pass the shaft through the grommet 12 of the yoke 33 G Put the lever on the shaft so that the boss on one side of the shaft hole of the lever 34 faces the shaft bearing 8 and engage the spline H Completely insert the shaft into the shaft bearing 8 I Install and tight...

Page 10: ...y F Manually move the lever 34 to the fully closed position G The clevis pin hole of the lever 34 and the hole of the clevis 35 should be assembled H Move the lever to the fully open position I Depending on the actuator mode either apply or release air pressure to the actuator move the end bearing lock nut 46 to a position where it can be reached and loosen the lock nut 46 J Rotate the rod end bea...

Page 11: ...ndwheel on the yoke both the sides higher diameter wheel installed opposite to actuator and lower diameter wheel installed on the actuator side see Figure 2 The handwheels can be easily removed by removing the toruarc ring 50 Also after installing the handwheel return the handwheel until the washer 51 hits the yoke lightly and fix it with the handwheel lock 52 at that position Note When using the ...

Page 12: ... the registered trademarks or trademarks of their respective owners BHMN 5A Actuator IOM 34584A 0820 08 2020 Parts Reference Ref Part name Ref Part name Ref Part name 1 Body 29 Rear cover 58 Boss cover 2 Seat ring 30 Cover screw 60 Cover Flange 3 Retainer 31 Screw retainer 61 Gasket 4 Plug 32 Front cover 64 Stud 5 Clevis pin plug 33 Yoke 67 Stud 6 indicator dot 34 Lever 68 Nut 7 Clevis pin 35 Clev...

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