pilot operated pressure regulator · 200 - 465 psi 200 - 530 psi black brown black pilot g80 g30f...
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ARGOSPilot Operated Pressure Regulator
Main Spring
Diaphragm
Anodized aluminum cage with reduced capacity options
Metal Foam Silencer (optional) made from NiCr allows noise level reduction up to 20 dba
Cover
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• High rangeability
• High flow capacity
• Low noise level
• Easy maintenance
• Application versatility
Loading and discharge pressure connections located on both sides
Introduction
Gascat’s Argos is a pilot operated regulator developed for the “easy to own and operate” Natural gas Market. This regulator works extremely well at gate stations, as district regulators, and in industrial applications. It can be used as a single working regulator, a worker with a monitor, or as a two stage cut with monitor.
Argos has a top entry design allowing maintenance to be performed without removing the valve body from the pipe. It is designed with very few internal components which minimizes the risk of operator error, while giving you a low cost of ownership.
General Features
Flow Director
Flow Director
The flow director is part of the diaphragm assembly and has been specially designed by Gascats’ engineers to reduce the gas particles kinetic energy. It also redirects any foreign objects that may have entered the gas stream, keeping them from impacting the diaphragm.
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The design of our new cage has 10% of its orifices longerthan the others and has a greater degree of inclination. This results in a very wide rangeability. These longer orifices allow the regulator to flow a very small amount of gas when the diaphragm begins to open.
Specially designed longer orifices allow larger flow rangeability andincrease the diaphragms life time
The Argos cage is made from aluminum bar and is completely manufactured in a CNC machine. The surface is then treated by a hard anodization process resulting in a superior surface hardness. This process protects the cage against corrosion.
Cage
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Regulating Spring
Filter element
Sensing Diaphragm
Adjusting Screw
SPRING RANGE
24” - 3.2 psi
2.5 – 4.6 psi
3.3 – 5.8 psi
10 – 40 psi
30 – 80 psi
60 – 200 psi
BODY
COMPONENT
PILOTS G30F / G32F
ALUMINUM
MATERIAL
SPRING HOUSING ALUMINUM
DIAPHRAGM BUNA N (*)
INTERNALS BRASS / S.S.
FILTER ELEMENT POLYETHILENE
FILTRATION DEGREE 10 MICRONS
Easy access to the plug
Seat
Plug
DETAILS
Spring
Pilots
The Argos pressure regulator can be supplied with three pilot options depending on the outlet pressure desired.
The G-80 operates from 0.9 – 16 psi. The G-30 operates from 10 – 465 psi. The G-32 operates from 200 – 530 psi.
Their design is simple with few internal parts reducing the amount of maintenance time and associated costs.
To protect the plug and seat assembly, they all have an internal 10 micron filter element.
SPRING COLOR
Black
Silver
Silver
Green
Red
White
100 – 265 psi
200 - 465 psi
200 - 530 psi Black
Brown
Black
PILOT
G80
G30F
G32F
5 – 16 psi Gray
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Pressure Regulator Working Principle
The Argos pressure regulator operates by a changing the pressure in the valves upper chamber, the diaphragm chamber. This pressure is controlled by one of the pilots in the Gascat family of products.
At no flow the outlet pressure is greater than the pilot set point, closing the pilot and allowing full inlet pressure to build in the diaphragm chamber. This pressure in conjunction with the main spring supplies enough force to overtake the pressure under the diaphragm, keeping the regulator closed.
When flow starts, the downstream pressure decreases and the pilot starts to open the valve by reducing the pressure in the diaphragm chamber. Once enough pressure is removed from the chamber, the pressure under the diaphragm will be higher, allowing it to lift the diaphragm and start flowing.
Inlet Pressure
Loading Pressure
Discharge Pressure
Sensing Line
Loading Pressure
Sensing Line
Outlet Pressure
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Standby Monitor System
In the standby monitor system, the working principle of the regulators are the same as explained on the previous page. The upstream regulator, the monitor, stays in the open position because the pressure set point on its pilot is higher than the pilot on the active regulator. Both regulators sense the downstream pressure, and if the active regulator is operating properly, the monitors’ pilot will never be satisfied, causing the monitor valve to open fully.
If a failure in the active regulator occurs causing an increase in the downstream pressure, the pilot on the monitor will sense this and start to close the monitor valve as the downstream pressure reaches its set point. The monitor will then become the active regulator until repairs are made.
Working Monitor System
In the working monitor system both regulators are actively reducing the pressure. A second pilot is added to the upstream regulator to act as a monitor for the second pressure cut.
The upstream regulator, or first stage, has a pilot with a set point for the initial pressure cut. The monitor pilot, connected in series with the first stage pilot, has a set point slightly higher than the second stage pilot. In the case of a second stage failure increasing the outlet pressure, the monitor pilot would start closing, causing pressure to build in the first stage diaphragm chamber, closing the first stage valve until the monitor pilot is satisfied.
Monitor Pilot
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Technical Characteristics
BODY
COMPONENT
CARBON STEEL ASTM A216 Gr. WCB
COVER
CAGE / GRID ANODIZED ALUMINUM
SEALS BUNA N
DIAPHRAGM BUNA N / HYDRIN
MATERIAL
1’’
ND
2’’
3’’
4’’
13.5
CV (100%)
48
93
206
CONNECTION
Flanges ANSI B16.5 - 150# & 300#
Female NPT ANSI B2.1 only for ND 1’’
DIMENSIONS WEIGHT
1"
ND
2”
3”
7.25
A
10
11.75
B C D
4” 13.89
7.75
10.5
12.5
14.5
150# 300#
8.15
9.4
12.6
13.6
8.15
9.4
12.6
13.6
150# 300#
2.4
3.4
4.1
5.3
2.4
3.4
4.1
5.3
150# 300#
7.2
7.2
7.2
7.2
7.2
7.2
7.2
7.2
150# 300#
24
33
62
93
25
35
64
97
150# 300#
A
B
C
D
197, 420
CG
735, 1500
1392, 2900
2944, 6400
CAGE
50,100%
50,100%
50,100%
50,100%
CARBON STEEL ASTM A216 Gr. WCB
www.gascat.com.br
Gascat policy is one of continuous improvement and development. The Company reserves the right to change specifications and introduce improved designs without previous notice.
CERT
Representative
02/2
018
DVGW
Pilot Operated Low Pressure Regulator
ARGOS
3 2 1 . 3 6 1 . 7 4 3 [email protected]