Masoneilan 171 Series Instruction Manual Download Page 12

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Dresser Masoneilan

85 Bodwell Street
Avon, MA 02322-1190
Tele:  508-586-4600  /  Fax:  508-941-5497
Email: [email protected]

BELGIUM

Phone: +32-2-344-0970
Fax: +32-2-344-1123

BRAZIL

Phone: 55-11-2146-3600
Fax: 55-11-2146-3610

CANADA

Ontario
Phone: 905-335-3529
Fax: 905-336-7628

CHINA

Phone: +86-10-8486-4515
Fax: +86-10-8486-5305

FRANCE

Courbevoie
Phone: +33-1-4904-9000
Fax: +33-1-4904-9010

GERMANY

Viersen
Phone: +49-2162-8170-0
Fax: +49-2162-8170-280
Frankfurt
Phone: +49-69-439350
Fax: +49-69-4970802

INDIA

Mumbai
Phone: +91-22-8354790
Fax: +91-22-8354791
New Delhi
Phone: +91-11-2-6164175
Fax: +91-11-5-1659635

ITALY

Phone: +39-081-7892-111
Fax: +39-081-7892-208

JAPAN

Chiba 
Phone: +81-43-297-9222
Fax: +81-43-299-1115

KOREA

Phone: +82-2-2274-0748
Fax: +82-2-2274-0794

KUWAIT

Phone: +965-9061157
Fax: +965-3987879

MALAYSIA

Phone: +60-3-2161-0322
Fax: +60-3-2163-6312

MEXICO

Phone:  

52-5-310-9863

Fax:  

52-5-310-5584

THE NETHERLANDS

Phone: +31-10-438-4122
Fax: +31-10-438-4443

RUSSIA

Veliky Novgorod
Phone: +7-8162-15-7898
Fax: +7-8162-15-7921
Moscow
Phone: +7 

495-585-1276

Fax: +7 

495-585-1279

SAUDI ARABIA

Phone: +966-3-341-0278
Fax: +966-3-341-7624

SINGAPORE

Phone: +65-6-6861-6100
Fax: +65-6-6861-7172

SOUTH AFRICA

Phone: +27-11-452-1550
Fax: +27-11-452-6542

SOUTH & CENTRAL 
AMERICA AND THE 
CARIBBEAN

Phone: 832-590-2303
Fax: 832-590-2529

SPAIN

Phone: +34-93-652-6430
Fax: +34-93-652-6444

UNITED ARAB EMIRATES

Phone: +971-4-8838-752
Fax: +971-4-8838-038

UNITED KINGDOM

Uxbridge
Phone: +44-1895-454-900
Fax: +44-1895-454-919

UNITED STATES

Massachusetts
Phone: 508-586-4600
Fax:  

508-427-8971

Corpus Christi, Texas 
Phone: 361-881-8182
Fax: 361-881-8246
Dresser Direct
Deer Park, Texas
Phone: 281-884-1000
Fax: 281-884-1010
(Contractor Sales)
Houston, Texas
Phone: 832-590-2303
Fax: 832-590-2529
California
Phone: 562-941-7610
Fax: 562-941-7810

DIRECT SALES OFFICE LOCATIONS

Aftermarket Value Services

Dresser - Masoneilan, a leading manufacturer of automated process control solutions, offers world-class global aftermarket 
services.  Consistent and high quality services executed through a network of fully authorized and certified third party service 
centers, as well as company owned facilities include: Valve Repair, Technical Training, Field Support, Spare Parts Supply, 
Complete Equipment Replacement and Comprehensive Diagnostics.

About Dresser, Inc.

Dresser, Inc. is a leader in providing highly engineered 
infrastructure products for the global energy industry. 
The company has leading positions in a broad portfolio 
of products including valves, actuators, meters, switches, 
regulators, piping products, natural gas-fueled engines, 
retail fuel dispensers and associated retail point of sale 
systems and air and gas handling equipment.

Leading brand names within the Dresser portfolio include 
Dresser Wayne

®

 retail fueling systems, Waukesha

®

 natural 

gas-fired engines, Masoneilan

®

 control valves, Mooney

®

 

regulators, Consolidated

®

 pressure relief valves, and Roots

®

 

blowers and rotary gas meters. It has manufacturing and 
customer service facilities located strategically worldwide 
and a sales presence in more than 100 countries. The 
company’s website can be accessed at www.dresser.com.

Dresser Masoneilan

With its breadth of products, unequaled global presence and 
advanced process control expertise, Dresser Masoneilan is 
uniquely positioned to be the leading provider of flexible, 
best fit control valve solutions.

Supported by an integrated network of sales offices, Dresser 
Masoneilan provides the widest range of valve solutions and 
services for virtually every process control application.

© 2008 Dresser, Inc.  All rights reserved.

EY0171-0172 10/08

DV-215-171_172 series Inst-v13.indd   2

11/5/08   12:13:35 PM

Summary of Contents for 171 Series

Page 1: ...Instructions EY0171 0172 10 08 171 and 172 Series Self Operating Pressure Regulators ...

Page 2: ...ION 7 4 3 INSTALLATION 8 4 4 INSTALLATION DIAGRAMS 8 4 5 START UP AND CALIBRATION 8 4 6 MAINTENANCE 8 Caution The instructions on the following pages should be thoroughly reviewed and understood prior to installing operating or performing maintenance on this equipment Throughout the text safety and or caution notes will appear and must be strictly adhered to otherwise serious injury or equipment m...

Page 3: ...cates 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 Masoneilan s written permission Please report any errors orquestions about the information in this manual to your local supplier These instructions are written specificall...

Page 4: ...ring Packs can be placed on pallets if required Follow all and any indications written 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 immediately prior to installation The end protections and covers must b...

Page 5: ...ames and versions Part 1 Blindhead 2 Gasket Set 3 Body 4 H P Insert 5 Inlet Flange 6 Plug 7 Diaphragm Case 8 Diaphragm 9 Protector optional 10 O Ring 11 Diaphragm Plate 12 Spring 13 Spring Case 14 Lock Nut 15 Adjusting Screw 16 Spring Button 17 Nut 18 Spring Guide 19 Screw 20 Nut 21 Diaphragm Plate Lower 22 Screw 23 Guide 24 Outlet Flange 25 Disc 26 Stud 27 Nut 28 Plug Screw 29 Screw 30 Cap 31 Bal...

Page 6: ...nstructions EY0171 0172 10 08 171 and 172 Series Self Operating Pressure Regulators This pipe shall be linked to ATEX form Gr II Cat 2 only in case of non high explosive atmosphere Fig 8 Pressure reduction system 1 Reducing regulator 2 safety relief valve 3 pressure gauge 3 2 4 Please keep in mind that the regulated pressure sens ing port is located inside the regulator therefore the pressure drop...

Page 7: ...m bracket assembly is fully rotated to the right and left each hole rotates by the same angle as the matching hole on the actuator flange This means that the bracket is at right angles to the high pressure insert Match the holes of the diaphragm with the holes in the actuator flange and install the spring spring button and spring case Install the blindhead 1 Return the Instructions EY0171 0172 10 ...

Page 8: ...phragm Plate 7 Diaphragm 8 O Ring 9 Spring Case 10 Spring 11 Nut 12 Screw 13 Gasket 14 Lock Nut 15 Packing Gland 16 Bearing 17 Spring Button 18 Adjusting Screw 19 Spring Guide 20 Screw 21 Nut 22 Screw 23 Plug 24 H P Insert 25 Outlet Flange 26 Stud 27 Nut 28 Plug Screw 29 Disc 30 Inlet Flange 31 Pin 32 Screw Recommended spare parts Note Parts 7 and 8 are supplied in one set only Note Actuator sizes...

Page 9: ...Spring 11 Nut 12 Screw 13 Gasket 14 Lock Nut 15 Packing Gland 16 Bearing 17 Spring Button 18 Adjusting Screw 19 Spring Guide 20 Screw 21 Nut 22 Screw 23 Plug 24 H P Insert 25 Outlet Flange 26 Stud 27 Nut 28 Plug Screw 29 Disc 30 Inlet Flange 31 Pin 32 Screw 33 Nut 34 Actuator Ring 35 Intermediate Plate Recommended spare parts Note Parts 7 and 8 are supplied in one set only Note Actuator sizes 220 ...

Page 10: ...tors 172 50 Double Diaphragm Versions The 172 50 regulators comprise two groups of regulators Group 1 All the group 1 regulators have just one diaphragm one of the controlled pressures acts under the diaphragm through an internal sensing line connection while the other acts over the diaphragm through a sensing line connection on the spring housing The plug is kept open by the spring The following ...

Page 11: ...O rings 8 should not be re used 4 6 6 Reassembly Carry out the dismounting operations in reverse order Push the stem of the plug into the guide and put the high pressure insert into position with the pin 31 For regulators with flanged ends put the flange into position tighten the nuts or screws uniformly Install the Diaphragm s see 4 6 3 taking care to properly arrange the Teflon protectors if equ...

Page 12: ...Texas Phone 832 590 2303 Fax 832 590 2529 California Phone 562 941 7610 Fax 562 941 7810 DIRECT SALES OFFICE LOCATIONS Aftermarket Value Services Dresser Masoneilan a leading manufacturer of automated process control solutions offers world class global aftermarket services Consistent and high quality services executed through a network of fully authorized and certified third party service centers ...

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