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Summary of Contents for Dresser Masoneilan 173 Series
- Page 1 Instructions EY0173 10/08 173 Series Self-Operating Pressure Regulators...
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Page 2: Table Of Contents
4.5 MAINTENANCE ..........................8 Copyright Masoneilan ® is a registered trademark of Dresser, Inc. All information contained herein is believed to be accurate at the time of publication and is subject to change without notice. Copyright 2008 by Dresser, Inc. All rights reserved. -
Page 3: Warranty
Dresser recommended usages. Dresser, Inc. 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 This is the safety alert symbol. It alerts you to potential back pressure regulators. -
Page 4: General Information
1. General Information: 1.0 Introduction Operators moving loads must take all necessary precautions The following instructions are designed to assist maintenance to prevent accidents. personnel in performing most of the maintenance required on the series 173 regulators and if followed carefully will reduce Storage maintenance time. -
Page 5: Cross-Section Drawing
3. 173 3.1 Cross-section drawing Part Blindhead Gasket Set Body Guide Diaphragm Case Ball Diaphragm Plate (Upper) Diaphragm Protector – optional O-Ring Spring Case Spring Adjusting Screw Lock Nut Spring Button Spring Guide Screw Diaphragm Plate – Lower Screw Plug Ring Disc Seat... -
Page 6: Installation
3.2 Installation 3.2.4 Please bear in mind that the regulated pressure sens- ing port is located inside the regulator, therefore the pressure 3.2.1 173 Series regulators must be installed with the actuator drops in the inter-connecting piping between the regulator and (2) facing upwards and the diaphragm perfectly horizontal, as the point of use will affect the accuracy of the maintained set shown in Fig.6. -
Page 7: Maintenance
3.4 Maintenance Align the holes of the diaphragm with those in the actuator flange and install the spring, spring holder and spring case. 3.4.1 The required maintenance interval will vary depending Install blindhead (1). Return the adjusting screw (13) to the on application. -
Page 8: Cross-Section Drawing 173-50 Single Diaphragm
4. 173-50 Differential Pressure Regulator 4.1 Cross-Section Drawing 173-50 Single Diaphragm Part Blindhead Gasket Set Body Guide Diaphragm Case Diaphragm Plate Diaphragm O-Ring Spring Case Spring Screw Gasket Lock Nut Packing Gland Bearing Spring Button Adjusting Screw Spring Guide Screw Screw Plug Ring... -
Page 9: Cross-Section Drawing 173-50 Double Diaphragm
4.2 Cross-Section Drawing 173-50 Double Diaphragm Part Blindhead Gasket Set Body Guide Diaphragm Case Diaphragm Plate (Lower) Diaphragm O-Ring Spring Case Spring Screw Gasket Packing Gland Lock Nut Bearing Spring Button Adjusting Screw Spring Guide Screw Screw Plug Ring Disc Seat Screw Gasket Plate... -
Page 10: Installation
The 173-50 regulators comprise two groups of regulators: 4.3.8 If there is the slightest possibility of the pressure upstream from the reduction regulator exceeding the Group 1 : maximum admissible pressure for the installation, caused by the failure of the overflow regulator, a safety relief valve must All the group 1 regulators have one diaphragm;... - Page 11 4.5.3 Actuator disassembly 4.5.5 Parts inspection (Figs. 9-10) Release the spring compression by turning the adjustment All the components are now ready to be inspected. Replace screw counter-clockwise, counting and noting the number any worn items. Clean all parts. of turns in order to restore calibration after reassembly. Pay particular attention to the condition of the disc of the plug Remove the spring housing (9) by loosening the nuts (21).
- Page 12 +34-93-652-6444 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.
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