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Masoneilan 173 Series Pressure Regulator Instruction Manual  |  1

© 2016 General Electric Company. All rights reserved.

Safety Information

Important - Please Read Before Installation

GE’s Masoneilan 173 Series Pressure Regulator  instructions contain 

DANGERWARNING, 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 

DANGERWARNING, 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 173 Series back 

pressure regulators, and do not apply to other regulators 
outside of this product line.

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 173 Series back 
pressure regulators.

Note:

• 

The regulator 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.

Summary of Contents for Masoneilan 173 Series

Page 1: ...GE Oil Gas Masoneilan 173 Series Self Operating Pressure Regulators Instruction Manual GE Data Classification Public ...

Page 2: ...HE SITE AND 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 CUS...

Page 3: ...d Handling 2 3 Installation and Assembly Instructions 173 Series Pressure Regulator 3 1 Cross Section Drawing 3 3 2 Installation 4 3 3 Start Up and Calibration 4 3 4 Maintenance 5 4 Installation and Assembly Instructions 173 50 Differential Pressure Regulator 4 1 Cross Section Drawing 173 50 Single Diaphragm 6 4 2 Cross Section Drawing 173 50 Double Diaphragm 7 4 3 Installation 8 4 4 Start Up and ...

Page 4: ...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 orquestions about the information in this manual to your local supplier Theseinstructio...

Page 5: ... All the regulator ends are fitted with covers to prevent dirt from entering Units can be placed on pallets if required Follow all instructions noted on the packaging Operators moving loads must take all necessary precautions to prevent accidents Storage Regulators must be kept in a dry place to protect them from atmospheric conditions They may only be removed from their crates or packing immediat...

Page 6: ... with part names and versions ATEX Construction Gr II Cat 2 Ref Part Name 1 Blindhead 2 Gasket Set 3 Body 4 Guide 5 Diaphragm Case 6 Ball 7 Diaphragm Plate Upper 8 Diaphragm 9 Protector optional 10 O Ring 11 Spring Case 12 Spring 13 Adjusting Screw 14 Lock Nut 15 Spring Button 16 Nut 17 Spring Guide 18 Screw 19 Nut 20 Diaphragm Plate Lower 21 Screw 22 Plug 23 Ring 24 Disc 25 Seat 26 Screw 27 Gaske...

Page 7: ... to decrease the pressure setting During regulator start up or operation do not touch any part of the regulator as this can conduct heat if the fluid used is at a high temperature 3 2 Installation 3 2 1 173 Series regulators must be installed with the actuator 2 facing upwards and the diaphragm perfectly horizontal as shown in Fig 6 In pressure reducing applications regulating very low down stream...

Page 8: ...his may damage important sliding parts 3 4 Maintenance 3 4 1 The required maintenance interval varies depending on application The user must establish a suitable interval based on the operating conditions Prior to disassembly remove all system pressure from the regulator Before starting the above operation make sure the recommend ed spare parts are available refer to the parts list indicated in Fi...

Page 9: ... a single diaphragm as shown in Figure 9 one of the controlled pressures acts under the diaphragm through an internal sensing line connection on the spring housing The plug is kept closed by the spring Ref Part Name 1 Blindhead 2 Gasket Set 3 Body 4 Guide 5 Diaphragm Case 6 Diaphragm Plate Upper 7 Diaphragm 8 O Ring 9 Spring Case 10 Spring 11 Nut 12 Screw 13 Gasket 14 Lock Nut 15 Packing Gland 16 ...

Page 10: ...nsing line connection and over the upper diaphragm through a sensing line nipple on the spring housing The plug is kept closed by the spring Figure 10 Ref Part Name 1 Blindhead 2 Gasket Set 3 Body 4 Guide 5 Diaphragm Case 6 Diaphragm Plate Upper 7 Diaphragm 8 O Ring 9 Spring Case 10 Spring 11 Nut 12 Screw 13 Gasket 14 Packing Gland 15 Lock Nut 16 Bearing 17 Spring Button 18 Adjusting Screw 19 Spri...

Page 11: ... pressure for the installation a safety relief valve must be installed upstream without an isolation valve in between in order to discharge the entire flow crossing the differential pressure regulator 4 3 7 Pressure Drops Because the regulated pressure sensing port is located inside the regulator the pressure drops in the inter connecting piping between the regulator and the point of use will affe...

Page 12: ... to be restored by lapping using a metal disc and abrasive paste The diaphragm should be replaced if it shows any damage The same applies to the Teflon diaphragm protector if included Gaskets should not be reused If preferred the regulator may be returned to an authorized GE repair center to be reconditioned 4 5 4 Reassembly Carry out the disassembly operations in reverse order Push the stem of th...

Page 13: ...10 GE Oil Gas 2016 General Electric Company All rights reserved ...

Page 14: ...Masoneilan 173 Series Pressure Regulator Instruction Manual 11 2016 General Electric Company All rights reserved ...

Page 15: ...12 GE Oil Gas 2016 General Electric Company All rights reserved ...

Page 16: ...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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