Gascat ARGOS Manuale di istruzioni
Installation, Operation & Maintenance Manual
Pressure Regulating Valve
Model ARGOS
Installation and Operation Manual
Argos - Pressure Regulating Valve MI-23
Elaborado Verificado / Aprovado CSQ Data Revisão Página
JJ
VBL JM 13/02/19 07 2 de 32
TABLE OF CONTENTS
1.0 GENERAL WARNING 3
1.1 PRE-COMMISSIONING INSTRUCTIONS 3
1.2 - HEALTH & SAFETY 3
1.2.1 - NOISE 3
1.2.2 - INSTALLATION 3
1.2.3 - OPERATION 3
1.2.4. MAINTENANCE 4
2.0 INTRODUCTION 4
2.1 SCOPE 4
2.2 DESCRIPTION 4
2.3 SPECIFICATIONS 4
2.3.1 AVAILABLE CONFIGURATIONS 4
2.3.2 AVAILABLE CONNECTIONS 4
2.3.3 TEMPERATURE LIMITS 5
2.3.4 COEFFICIENT OF FLOW (CV) 5
2.3.5 WEIGHTS 5
2.3.6 MAXIMUM WORK PRESSURE 5
2.3.7 SET POINT PRESSURES 6
2.3.8 ACCURACY AND LOCK UP 6
2.3.9 SLAM SHUT VALVE SPRING (SET POINT) 7
2.3.10 ACCURACY AND LOCK UP 7
2.3.11 PRESSURE REGULATORS DIMENSIONS 8
3.0 - OPERATION PRINCIPLE 10
3.1 THE REGULATOR 10
3.2 REGULATOR - ACTIVE / MONITOR SYSTEM 11
3.3 PILOTS 12
3.4 FITLERS 12
3.5 SECURITY SHUT-OFF VALVE 13
4.5.1 PH ACTUATOR & H ACTUATOR 13
4.5.2 GENERAL RESET PROCEDURE 13
4.0 - INSTALLATION 15
4.1 FILTER 15
4.2 CLEANING 15
4.3 FLOW DIRECTION AND SYSTEM INTEGRITY 15
4.4 SENSING LINE 15
4.5 RECOMMENDED INSTALLATION SCHEME 16
4.5.1 SINGLE REGULATOR 16
4.5.2 ACTIVE / MONITOR SYSTEM 17
4.5.3 SYSTEM WITH TWO SSV AND ONE REGULATOR 18
4.5.4 WORKING MONITOR SYSTEM 19
4.6 COMMISSIONING AND START-UP 20
4.6.1 GENERAL RECOMMENDATIONS 20
4.6.2 COMMISSIONING (SINGLE REGULATOR - STREAM) 20
4.6.3 STAND BY LINE ADJUSTMENT 21
4.6.4 COMMISSIONING (ACTIVE MONITOR SYSTEM) 21
4.6.5 STAND BY LINE ADJUSTMENT (ACTIVE / MONITOR SYSTEM) 22
4.6.6 COMMISSIONING (WORKING MONITOR SYSTEM) 23
4.6.7 LIST OF RECOMMENDED TOOLS 24
5.0 TROUBLE SHOOTING 25
6.0 MAINTENANCE 26
6.1 RECOMMENDED REPAIR PARTS AND KITS 27
6.2 RECOMMENDED TORQUES 32
Installation and Operation Manual
Argos - Pressure Regulating Valve MI-23
Elaborado Verificado / Aprovado CSQ Data Revisão Página
JJ
VBL JM 13/02/19 07 3 de 32
1.0 GENERAL WARNING
1.1 PRE-COMMISSIONING INSTRUCTIONS
It should be clearly understood that with these information hereby presented in the instructions for commissioning that
follows, there is no intention to revenue or replace the instructions determined by any other organ or institute and should be
done reference to the relevant Standards and/or recommendations existents over this subject.
Before any commissioning, it is understood that the execution of proper purification and cleanness procedures that
shall be observed and all instructions about pressurization and standard of safety and health, should be strictly observed.
The valve suppliers recommendation, as for example, open slowly and open very slowly should be strictly observed.
1.2 HEALTH & SAFETY
Regulators, valves and other pressurized components that contain toxic gases, flammable or other hazardous products,
are potentially dangerous if not operated and maintained correctly. It is mandatory that all users of this equipment are
properly educated and guided on potential dangers, and get assured that the personnel responsible for their installation,
testing, commissioning, operation, and the plant maintenance are competent to perform these tasks. Instruction manuals
are provided for the operators’ guidance, but it is assumed that they have a basic level of knowledge. If there are any
questions or ambiguities that affect the proper procedures ask Gascat Ind. e Com. Ltda., who will be pleased to advise or
provide the relevant service or instruction. TAKE NO RISKS. Our phone, fax and e-mail numbers are the following:
Gascat Indústria e Comércio Ltda.
Rodovia SP 73, 1141 - Indaiatuba / São Paulo.
CEP 13347-990
Phone: 55 19 3936-9300
Fax: 55 19 3935-6009
Email: vendas@gascat.com.br / sales@gascat.com.br
The items that follow, although not exhaustive, provide guidance on possible sources of danger to health and safety.
1.2.1 NOISE
Regulators, valves and pressure reducers can generate high levels of noise, which may be harmful to persons exposed
to them for long periods. Users should ensure that adequate precautions are taken in order to provide health safety to
employees and/or to third parties according to the Standards and recommendations in force.
1.2.2 INSTALLATION
All equipment, piping and vessels are designed to withstand mechanical stress, such as torque and bending moments
in addition to internal pressure. However, maximum care must be taken during installation, not to impose excessive stress,
which may cause cracks that may result in a serious break when the regulator is put into operation. Excessive stress can
also be caused because the valve cannot sustain piping stretches, which require adequate support.
All regulators, shutoff valves, relief valves, etc., must be installed with the correct flow direction.
Impulse lines are important components of any control system, and their proper installation is essential, with no isolation
valves.
Impulse lines shall be properly supported to reduce excessive vibration, which may cause fatigue rupture. They shall
also be positioned so that they cannot serve as hand or footrest. Impulse lines should be slightly inclined so that liquid and
condensates drain towards the main pipe.
When necessary (in underground facilities or indoor area) a ventilation pipe shall be installed from the threaded hole
(ؼ” NPT), found in the valve bell or in the diaphragm housing, and extended to a safe and ventilated location, with the
vent output protected to prevent it from inlet of rain water and insects that can obstruct ventilation.
Auxiliary systems shall not be changed or modified without knowledge of the operating conditions and the responsible
personnel permission.
1.2.3 OPERATION
Installation and Operation Manual
Argos - Pressure Regulating Valve MI-23
Elaborado Verificado / Aprovado CSQ Data Revisão Página
JJ
VBL JM 13/02/19 07 4 de 32
Depending on the regulator type, its valve may be positioned fully open. Consequently, when putting a regulator in
operation the shutoff valves shall be opened slowly, so that the regulator valve can assume its regulating position. If the
shutoff valves are quickly opened, the upstream pressure can pass through the regulator and over-pressurize the
downstream section of the main line.
All regulators, etc. shall operate with the regulation spring specified by the manufacturer. This is particularly important
when operating relief valves or shutoff valves, since incorrect springs may prevent a relief valve to open and a shutoff valve
to close.
Precautions shall be taken to prevent water inlet through breathing and ventilation openings.
1.2.4 MAINTENANCE
Regulators and valves contain gases under pressure, sometimes at a much higher pressure than the atmospheric
pressure. Before attempting to investigate a problem, or perform maintenance work on an equipment, it must be safely
depressurized. Furthermore, as many gases may be flammable, toxic, corrosive, or hazardous, it may be necessary to
purge the system with an inert gas, such as nitrogen. Special precautions are required for operation with gases such as
oxygen or hydrogen chloride, and the user must ensure that proper procedures are implemented.
Eventually, it is not enough to isolate the high-pressure device, since high pressure can be retained downstream of the
isolation valves. Do not try to remove caps, plugs, etc, before the device is properly released. Even so, it is wise to
consider that high-pressure gas may be trapped when removing covers and plugs.
Most regulators use spiral springs as the charging device. It is important to reduce these springs loading by moving
their pressing plates backwards as much as possible. In some cases, the spring may contain some residual load, even
when it is relaxed to the limits of its housing.
2.0 INTRODUCTION
2.1 SCOPE
This manual has the objective to provide information of operation, installation and maintenance about the pressure
regulator model ARGOS manufactured by GASCAT.
2.2 DESCRIPTION
The pressure regulator model ARGOS is pilot operated type designed by Gascat engineering to assist different
applications. It has large utilization in the Gas Distribution.
Outstanding by simplicity of operation and handling, facility of maintenance due of few internal parts and the relation
cost-benefit.
2.3 SPECIFICATIONS
2.3.1 AVAILABLE CONFIGURATIONS
Active / Monitor System
Working Monitor System
Flow Limiter by Orifice Plate
2.3.2 AVAILABLE CONNECTIONS
Installation and Operation Manual
Argos - Pressure Regulating Valve MI-23
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JJ
VBL JM 13/02/19 07 5 de 32
ND FLANGE ASME B16.5 FLANGE DIN 2634 / 2635
1” 150#RF / 300#RF
(Thread NPT Female only for 1’’) PN 25 / PN 40
2” 150#RF / 300#RF PN 25 / PN 40
3” 150#RF / 300#RF PN 25 / PN 40
4” 150#RF / 300#RF PN 25 / PN 40
Note: other diameters and connections should be previously consulted.
2.3.3 TEMPERATURE LIMITS
Operation temperature: -20°C to 60°C
Room temperature: -20°C to 60°C
The temperature limits given in this manual or in any applicable standard shall not be exceeded under any
circumstances, under risk of damage to the equipment, to the installation safety, and to the people involved in the
operation.
2.3.4 COEFFICIENT OF FLOW (CV)
ND CV KG
1” 13.5 420
2” 48 1500
3” 93 2900
4” 206 6400
NOTE:
1) We suggest considering a 20% safety margin on the calculated value.
2) When dimensioning an active-monitor system consider a 25% restriction in the CV/KG of both valves.
2.3.5 WEIGHTS
ND ARGOS ARGOS SSV
150# 300# 150# 300#
1” 11 11.5 - -
2” 15 16 30 31
3” 28 29 43 44
4” 42 44 58 60
NOTE:
1) Approximate weights given in kilograms (Kg)
2) Consider the body in carbon steel SA-216 WCB
2.3.6 MAXIMUM WORK PRESSURE
Installation and Operation Manual
Argos - Pressure Regulating Valve MI-23
Elaborado Verificado / Aprovado CSQ Data Revisão Página
JJ
VBL JM 13/02/19 07 6 de 32
150# 300# PN 25 PN 40
19 bar 51 bar 25 bar 40 bar
The pressure limits given in this manual or in any applicable standard shall not be exceeded under any circumstances,
under risk of damage to the equipment, to the installation safety, and to people involved in the operation.
2.3.7 SET POINT PRESSURES
Pressure regulators model ARGOS can use three pilot models for pressure control G80, G30F or G32F. The table
below presents the adjustment ranges of each model:
G80 PILOT
SPRING COLOR PART NUMBER RANGE
WHITE 01.50.21G 60 - 220 mbar
BLACK 01.50.67 170 - 320 mbar
SILVER 01.50.21 230 - 400 mbar
GRAY 01.50.24 350 – 1100 mbar
G30F PILOT
SPRING COLOR PART NUMBER RANGE
SILVER 01.49.61 0.7 - 2.8 bar
GREEN 01.49.65 2 - 5.5 bar
RED 01.49.34 4.5 – 14 bar
BROWN 01.49.33 7.0 - 18.3 bar
BLACK 01.49.59 14.0 - 32.0 bar
32F PILOT
SPRING COLOR PART NUMBER RANGE
BLACK 01.49.59 14.0 - 36.6 bar
2.3.8 ACCURACY AND LOCK UP
Pressure Regulator:
AC up to 2.5%; SG up to 5%
Installation and Operation Manual
Argos - Pressure Regulating Valve MI-23
Elaborado Verificado / Aprovado CSQ Data Revisão Página
JJ
VBL JM 13/02/19 07 7 de 32
2.3.9 – SLAM SHUT VALVE SPRING RANGE (SET-POINT)
SSV – ACTUADOR H
SPRING COLOR PART NUMBER RANGE
PURPLE 01.52.61 0.3 – 1.5 bar
RED 01.52.62 1.0 – 5.0 bar
YELLOW 01.51.54 4.0 – 11.0 bar
SSV – ACTUATOR PH
SPRING COLOR PART NUMBER RANGE
BROWN 01.52.64 10.0 – 16.0 bar
ZINCATED 01.52.25 14.0 – 38.0 bar
WHITE 01.52.36 28.0 – 60.0 bar
2.3.10 – ACCURACY AND LOCK UP
Pressure regulator: AC up to 2,5% / SG up to 5%
SSV: AG up to 5
Installation and Operation Manual
Argos - Pressure Regulating Valve MI-23
Elaborado Verificado / Aprovado CSQ Data Revisão Página
JJ
VBL JM 13/02/19 07 8 de 32
2.3.11 PRESSURE REGULATOR DIMENSIONS
DIMENSIONS (mm)
A (RF) B C
ND 150# /
PN16
300# /
PN25,
PN40
ANY
CLASS
ANY
CLASS
1” 184 197 222 230
2” 254 267 243 288
3” 298 317 318 340
4” 353 368 340 390
General Tolerance = ±2
Installation and Operation Manual
Argos - Pressure Regulating Valve MI-23
Elaborado Verificado / Aprovado CSQ Data Revisão Página
JJ
VBL JM 13/02/19 07 9 de 32
DIMENSIONS (mm)
A (RF) B C
ND 150# /
PN16
300# /
PN25,
PN40
ANY
CLASS
ANY
CLASS
2” 254 267 550 300
3” 298 317 620 331
4” 353 368 703 410
General Tolerance = ±2
Installation and Operation Manual
Argos - Pressure Regulating Valve MI-23
Elaborado Verificado / Aprovado CSQ Data Revisão Página
JJ
VBL JM 13/02/19 07 10 de 32
3.0 - OPERATION PRINCIPLE
3.1 THE REGULATOR
The pressure regulator Argos works by principle of drop pressure in the upper chamber (diaphragm of main valve).
In the flow absence the pressure regulator stays close, because the pressure in the upper chamber of diaphragm (feed
by the pilot), added to the spring force is superior to the pressure that acts below the diaphragm (inlet pressure).
The pilot, in this condition of flow absence, stays closed, because the outlet pressure added to obturator spring of pilot
is superior to the regulating spring force, and moves the obturator set upward, against the pilot seat, closing the pilot gas
passage.
In case of flow, the pressure in the sensing line start decreasing, causing the pilot opening because of the regulating
spring of pilot added to the pressure under its diaphragm. In parallel, the discharge pressure also decreases. In this
condition, occur the reducing of the pressure in the upper chamber of diaphragm of main valve. Then, the inlet pressure
become superior to the spring force of main valve added to the pressure in the upper chamber of diaphragm of main valve,
allowing that the main valve opens, releasing the gas to the process.
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