Installation and Operation Manual
Argos - Pressure Regulating Valve
MI-23
Elaborado Verificado / Aprovado CSQ Data Revisão Página
JJ
VBL JM 13/02/19 07 14 de 32
3.5.2.1 – PROCEDURE TO RESET VALVE IN CASE OF OVER PRESSURE
1. Adjust the pressure of sensing line around 10-15% below under the set-point.
2. Use the by-pass valve to equalize the internal pressure of the valve.
3. Pull up the actuator stem until the upper position using the cap.
3.5.2.2 – PROCEDURE TO RESET VALVE IN CASE OF UNDER PRESSURE
1. Adjust the pressure of sensing line around 10-15% above the over set-point.
2. Use the by-pass valve to equalize the internal pressure of the valve.
3. Pull up the actuator stem until the upper position using the cap
3.5.3 – SHUT-OFF RESET & INTEGRATED BYPASS PROCEDURE
To reset the shut-off, it is necessary to equalize the pressure before and after the shutter. However it is
necessary to use the integrated bypass in the reset lever. See below how to proceed:
When there is a lock, the position indicator will be indicated in closed position (according the picture). Then
it is necessary to use the cap screwing it to pull up the shaft (according the picture). After connecting the cap in
the actuator stem, the user should pull up the cap and to move the reset lever at the same time (according the
picture). The reset lever will move 20% of course, there is a resistance (because the differential pressure
between the inlet pressure and the outlet pressure) until the pressure before and after the shutter to be the
same.
The SSV is supplied in the closed position and with the actuator of under pressure blocking disarmed. The
springs for over and under pressure blocking are adjusted in Gascat.
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