General Features

• High rangeability
• High flow capacity
• Low noise level
• Easy maintenance
• Application versatility

Cage

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.
The design of our new cage has 10% of its orifices longer than 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 and increase the diaphragms lifetime.
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.
Flow Director
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.
Pressure Regulator Working Principle

The Argos pressure regulator operates by 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 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 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.


Standby Monitor System

In the standby monitor system, the working principle of the regulators is 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
Technical Characteristics

Argos Literature

Click on the download link to view and download the Argos Literature.

The literature will give you more information about the Argos: Pilot Operated Pressure Regulator.
Download Argos Literature