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Masoneilan 10900 Series Actuator Instruction Manual  |  3

© 2015 General Electric Company. All rights reserved.

Important - Please Read Before 

Installation

Masoneilan 10900 Series actuator instructions contain 
DANGER, WARNING, and CAUTION labels, where necessary, 
to alert you to safety related or other important information. 
Read the instructions carefully before installing and 
maintaining your control valve. DANGER and WARNING 
hazards are related to personal injury. CAUTION hazards 
involve equipment or property damage. Operation of 
damaged equipment can, under certain operational 
conditions, result in degraded process system performance 
that can lead to injury or death. Total compliance with all 
DANGER, WARNING, and CAUTION notices is required for 
safe operation.

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 serious injury.

Indicates a potentially hazardous situation which, if not 
avoided, could result in serious injury.

Indicates a potentially hazardous situation which, if not 
avoided, could result in minor or moderate injury.

When used without the safety alert symbol indicates a  
potentially hazardous situation which, if not avoided, could 
result in property damage.

Note: Indicates important facts and conditions.

About this Manual

• The information in this manual is subject to change 

without prior notice.

•  The information contained in this manual, in whole or 

part, shall not be transcribed or copied without GE’s 
written permission.

• Please report any errors or questions about the 

information in this manual to your local supplier.

• These instructions are written specifically for the 

Masoneilan 10900 Series actuators, and do not apply to 
other equipment outside of this product line.

Life Period

The current estimated useful life period for the Masoneilan 
10900 Series Actuators is 25+ years. To maximize the 
useful life of the product it is essential to conduct annual 
inspections, routine maintenance and ensure proper 
installation to avoid any unintended stresses on the 
product.  The specific operating conditions will also 
impact the useful life of the product. Consult the factory 
for guidance on specific applications if required prior to 
installation.

Warranty

Items sold by General Electric are warranted to be free 
from defects in materials and workmanship for a period of 
one year from the date of shipment provided said items are 
used according to GE recommended usages.  GE reserves 
the right to discontinue manufacture of any product or 
change product materials, design or specifications without 
notice.

This instruction manual applies to the Masoneilan 10900 
Series actuators.

Note:

• 

The actuator MUST BE installed, put into 
service and maintained by qualified and 
competent professionals who have undergone 

 

suitable training.

• Under certain operating conditions, the use of 

damaged equipment could cause a degradation of the 
performance of the system which may lead to personal 
injury or death.

•  Changes to specifications, structure, and components 

used may not lead to the revision of this manual unless 
such changes affect the function and performance of 
the product.

•  All surrounding pipe lines must be thoroughly flushed to 

ensure all entrained debris has been removed from the 
system.

Safety Information

Summary of Contents for 10900 Series

Page 1: ...GE Oil Gas 10900 Series Masoneilan Spring Diaphragm and Differential Pressure Actuators for use with 500 Series Regulators Instruction Manual GE Data Classification Public ...

Page 2: ...D THE PARTICULAR REQUIREMENTS 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 OPER...

Page 3: ...GE s written permission Please report any errors or questions about the information in this manual to your local supplier These instructions are written specifically for the Masoneilan 10900 Series actuators and do not apply to other equipment outside of this product line Life Period The current estimated useful life period for the Masoneilan 10900 Series Actuators is 25 years To maximize the usef...

Page 4: ...inars for technicians In order to participate in one of these training seminars you should contact our local GE Masoneilan Representative or our Training Department Description Operation The 10900 Actuator is a simple powerful mechanical device It is Air to Extend Stem type The nominal range of an actuator is the pressure range in pounds per square inch psi in which the pressure setting can be obt...

Page 5: ...juster 3 Bushing Incl Ref 2 4 Lower Spring Seat 5 Actuator Spring 6 Actuator Stem 7 Cap Screw L case to yoke 8 Diaphragm Case Lower 9 2 Diaphragm Chamber 10 Diaphragm Plate 11 Diaphragm 13 Diaphragm Case Upper 14 1 Diaphragm Washer 15 Cap Screw Diaph case 16 Nut Diaph case 17 2 Stud Diaph case 18 Stop Cup 21 4 Reducing Ring 22 5 Stop Screw 23 5 Stop Spacer 27 1 Upper Spring Washer 28 1 Locknut Act...

Page 6: ... Ring 26 O Ring Retainer 27 Upper Spring Seat Incl w Ref 6 28 1 Locknut 29 1 Connection Adapter Ref Part Name Ref Part Name Ref Part Name Recommended spare parts 1 Only on Low Pressure Case Design 2 Only on High Pressure Case Design 3 Qty 2 on Low Pressure Case Design Qty 1 on High Pressure Case Design Installation On steam service the regulator should be installed with the actuator down so that t...

Page 7: ...or stem during this operation Install new diaphragm and reassemble by reversing of the above description order Readjust the spring compression see above On Differential Actuators 500 50 Series Regulators Figure 2 a On low pressure case design Remove the high and low pressure lines from the diaphragm case 13 and the diaphragm chamber 9 Relieve all spring compression by unscrewing spring adjuster 2 ...

Page 8: ...of their respective owners 2014 General Electric Company All rights reserved Visit our web site www fr eps com E P S FRANCE 24 bis rue de Picpus 75012 PARIS Tel 33 0 762 682 291 Tel 33 0 650 590 965 ventes fr eps com E P S CAMEROON Immeuble Carré d Or Rue Soppo Priso Côté Chococho Bonapriso DOUALA Tel 237 6 52 12 70 95 Tel 33 0 782 006 276 ventes fr eps com ...

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