Installation and Operation Manual
Brise Plus - Pressure Regulating Valve
MI-23
Elaborado
Verificado / Aprovado
CSQ
Data
Revisão
Página
JJ
GN
JM
10/09/18
06
22 de 45
6 – TROUBLE SHOOTING
To maintain the pressure regulator in the correct conditions of operation, the pressure regulators model BRISE
PLUS must be submitted to preventive maintenance, the periodicity depends of the flow, quantity/type of
contaminants and the operation conditions.
Defect
Cause
Correction
Vibration
Problems in the installation
Verify if the pipe is correctly supported, if the
vibration doesn’t come from other devices or if it is
inadequate sizing of some equipment.
Damaged diaphragm or stem
assembly of main valve damaged
Change the damaged pieces.
Outlet Pressure
Variation
Low flow (less than 5% of
maximum flow)
Verify the regulator sizing (check if is available a
reduced orifice).
Sensing line installed wrongly
Verify if the sensing line is too close of main valve
of near of an equipment that my cause flow turbulence
Bleed valve wrongly adjusted
Proced the adjustment of bleed valve with the
regulator operating (working) to find the best position oo
work.
Direct passage
through the regulator or
main valve totally opened
Main regulator stem locked
Verify the respective stem and change it if
necessary.
Sensing line damaged
Verify the sensing line and change it if necessary.
Outlet drop pressure /
non-enough flow
Filter element dirty
Clean or change the filter element.
No Flow and No
Outlet Pressure
Main diaphragm damaged
Change the main diaphragm.
Outlet pressure
increase / Direct passage
Particles between obturator /
seat or these parts damaged
Remove the inspection cover and obturator and
clean the components (obturator e seat).
Verify all other components and change if
necessary.
Particles between obturator /
seat or these parts damaged
Remove the pilot balancin, clean it or change if
necessary.
