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The Practical Pumping Handbook

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Large Bore 82 ......
Seal New
Chamber Shaft Sleeve
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Figures Environmental Upgraded New
10-2 8.10-3 Controls Seal Bearings
Figure 11.6: Mechanical seal failure chart

9 Upgrade the material selection
9 Check for low flow. (See Figure 11.1)
9 Change to large bore seal chamber

9 Check for change in pumpage
Pressure problem
9 Improve environmental controls
9 Check pump operation for change in flow rate

Corrosion problem
9 Upgrade the material selection
9 Check for change in pumpage
Spring ha ng-up
9 Improve environmental controls

9 Change to seal with protected springs

196