Installation and Operation Manual
Urano - Pressure Regulating Valve
MI-31
Elaborado
Verificado / Aprovado
CSQ
Data
Revisão
Página
JJ
JJ
JM
05/07/21
05
31 de 74
4)
SLOW AND GRADUALLY
open the inlet shut-off valve, or when the station is provided with a by-
pass of the shut-off valve use the same to perform pressurization.
5) Since there is no pressure downstream of the regulator, the blocking valve model GIPS-FC will be in
the closed position, hence keep the bypass valve located at the side of the SSV pressed to
pressurize the span between the same and the pressure regulator.
6) Still pressing the SSV bypass valve, proceed by applying a light load in the pilot regulation spring in
order to admit a small pressure downstream of the regulator valve, use a pressure gauge to monitor
this pressure rise and leave the pressure adjusted to a value at least 20% above the low set point
pressure of the SSV.
7) Once the SSV actuator is already pressurized, you may release the by-pass valve, and proceed by
resetting the SSV actuator.
8) Reset the shutter of the GIPS-FC shut-off valve, using the reset lever.
9) Open the vent valve to 20%, check whether the pressure will continue at the preset value.
10) Using a 7/8" combination spanner turn the adjustment screw clockwise to increase the output
pressure up to the desired setpoint value.
11) If the pressure is oscillating, perform a fine adjustment by opening or closing the discharge valve.
12) Once the pressure has stabilized, open the vent valve by one-half turn and check the adjustment
accuracy.
13) Once the pressure regulation agrees with the desired value, you shall close the vent valve and
check the valve lock-up.
14) Check for leaks in connectors and other pressure regulator connections of the span.
DISCHARGE
VALVE