8
O-Ported Series
Operation and Maintenance Manual
Troubleshooting
Trouble
Possible cause
Solution
Media oozing out of gland packing
Packing deteriorated
Replace packing
In fully closed position, valve leaks
Seat is worn out or torn
Replace seat
Gate is scratched
Replace gate
High torque during valve seating and
unseating
Misalignment between gate and stem
a) Remove the clevis fasteners
b) Loosen the superstructure fasteners
c) Adjust the alignment of the stem and
gate
d) Connect the clevis fasteners
e) Retighten superstructure fasteners
Packing is not tighten properly
Adjust gland nuts
Valve jerks during open and close
Superstructure fasteners loosen
Tighten the super structure fasteners
Insufficient air supply
Pneumatic operated valves: Increase supply
pressure
Solenoid valve dust accumulation
Remove and clean solenoid valve
Piston rod seal damaged
Replace seal
All statements, technical information, and recommendations
in this bulletin are for general use only Consult Bray/VAAS
representatives or factory for the specific requirements and
material selection for your intended application The right to
change or modify product design or product without prior notice
is reserved Patents issued and applied for worldwide
Bray
®
is a registered trademark of
Bray International, Inc
© 2015 Bray International, Inc All rights reserved
OM_O-Ported Series_12_20_2016
Bray/VAAS
Division of Bray International, Inc
13333 Westland East Blvd
Houston, Texas 77041
Tel: 281 894 5454 •
www bray com
