Installation and Operation Manual
Urano - Pressure Regulating Valve
MI-31
Elaborado
Verificado / Aprovado
CSQ
Data
Revisão
Página
JJ
JJ
JM
05/07/21
05
56 de 74
2)
Remember to lubricate the O-rings with a thin layer of grease during the valve assembly process, as
well as the rod, the piston and the static parts to reduce friction between these components.
3)
During screws (pos 13) bolting on the diaphragm plate, use a chemical thread locker in order to
improve parts fixing.
6.4 PROCEDURE FOR THE URANO SO (FO) REGULATOR DISASSEMBLY
1) Before proceeding with the equipment disassembly, check if all the conditions set out in item 4.6.1 of
this manual have been observed.
2) Under no circumstances start the equipment disassembly if it is pressurized.
The disassembly procedure given below refers to the components’ positions shown in the diagram of
section 6.0 of this manual.
3) Remove the pilot block and all connectors connected to the main valve.
4) Proceed by removing the screws (pos 6)
5) Remove the top cover of the actuator (pos 34)
6) Remove the indicator pin (pos 58)
7) Release the diaphragm assembly. To facilitate this task proceed as follows:
7.1) Fix one single screw of the cover (pos 3) in the bottom cover of the actuator (pos 29) and
position one hook spanner to the right of this screw, locking its hooks into the holes of the upper
diaphragm plate, as shown in the illustration: