Installation and Operation Manual
Urano - Pressure Regulating Valve
MI-31
Elaborado
Verificado / Aprovado
CSQ
Data
Revisão
Página
JJ
JJ
JM
05/07/21
05
20 de 74
4.4 IMPULSE PICK-UP
The correct positioning of the impulse pick-up in the pipeline is essential for proper operation of the pressure
regulator valve. Therefore, install the pilot impulse pick-up downstream of the regulator at a minimum distance of 5
times the nominal pipe diameter, in a pipe span free of obstruction with a pipe diameter where the gas outflow does
not exceed the maximum speed of 25 m/s (considering the smallest outlet pressure and the maximum flow rate).
To obtain a better pneumatic signal use tubing in stainless steel AISI 316 with ½" OD to connect the regulator pick-
ups to the process.
To prevent dirt and condensates accumulation in impulse pick-ups, we recommend that their installation shall have
a 5% to 10% slope towards the pipe connector.
Pay attention to connections welded to the pipe, they must be fully unobstructed, without any welding residue that
can interfere with the pneumatic signal.
No kind of blocking valves shall be installed in pressure regulators impulse outlets.
Each pressure regulator model Urano SC (FF) needs three process connections: one directly to the actuator on the
diaphragm, one that will be connected directly below the pilot and a third one that will be used to unload the actuator
under the diaphragm.
IMAGE OF URANO FF
It is not must be installed blocking valves in any types in the sense line.
DISCHARGE OUTLET
PILOT SENSOR
OUTLET
VALVE
SENSOR OUTLET
FRONT VIEW
BACK VIEW