Troubleshooting - Cameron TYPE 31 Installation, Operation And Maintenance Manual

Troubleshooting

Trouble
The valve is not closed
completely.
The seats
are leaking.
Operator stops are incorrectly
adjusted.
The seat rings are
malfunctioning.
The stem
Stem screw or nut is loose.
is leaking.
The stem seal is damaged.
Installation, Operation and Maintenance Manual
Probable Cause
E N G I N E E R E D V A L V E S
Remedy
Operate the valve to the fully closed position.
Block-and-Bleed the valve to insure that the
leakage has stopped. Refer to Block-and-
Bleed procedure on page 7.
Properly adjust the operator stops. Refer to
Setting Stops on page 4.
Block-and-Bleed the valve to insure that the
leakage has stopped. Refer to the Block-and-
Bleed procedure on page 7.
Clean and flush the seat rings. Refer to the
Injection Procedure section on pages 10 - 12.
Tighten the stem screw or nut tightly enough
to stop the leak. Do not exceed torque value
for stem screw. Contact your Cameron
Valves & Measurement group representative
to obtain torque values.
Operate the valve to make sure the stem is
causing the leak.
Replace stem seal. Contact your Cameron
Valves & Measurement group representative
for assistance.
Inject a small amount of sealant into the stem
injection fitting.
8
IOM-CAM-BALL-T31