DeZurik G-SERIES Manual - Halaman 7

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Halaman Cetak
DeZurik G-SERIES Manual
Stop Adjustments
Direct Pressure - When the higher pressure is at the end opposite the seat. See Figure 2.
Reverse Pressure - When the higher pressure is at the seat end of the valve. See Figure 2.

Actuator Removal

The actuator removal procedure is dependent upon whether or not the actuator is built for submerged
service. Follow the correct section to properly and safely remove the actuator.
When Eccentric valves are mounted in a vertical pipeline, or mounted in a horizontal
pipeline with the plug stem horizontal, there is a chance that gravity will cause the plug
to swing to a lower position in the valve body when the actuator is removed. To avoid
this hazard, place the plug in the lowest position before removing the actuator.

Submerged Service Actuators

Discontinue flow and relieve pipeline pressure.
1.
The valve is a pressure vessel. Pressure must be completely released before
removing the bonnet bolts on the 4", 5", 6" and 10" valves.
2. Scribe corresponding lines on the valve and actuator to be used for alignment during actuator
installation.
August 2012
Manual G-Series Actuators on PEC Eccentric Valves
(continued)
Figure 2 – Pressure Direction
Page 7
DeZURIK
D10063