Case Studies
DualPac® 2212 Reduces Leakage and Extends Packing Life in Phosphate Mine
Challenge
Issue
- Customer was using a competitor’s PTFE packing on large centrifugal pumps used in phosphate mining
- Heavy leakage led to frequent adjustments and costly repacking
Goal
Increase the length of continuous service to support plant cycle and reduce maintenance costs.
Large pump required adjustments every few days due to severe leakage.
Solution
Application
- Two large 20 x 20 centrifugal pumps with 54″ impellers and 2000 hp motors
- Three rings of DualPac® 2212 were installed as shown in figure 2 with a SpiralTrac™. This active throat bushing enables particulates to be removed from the stuffing box and away from packing. It also reduces the need for flush water
- Bolts were fitted with Chesterton Live Loading and torqued to engineering specifications
Superior sealing is achieved with three rings of DualPac 2212 and SpiralTrac.
Results
Client Reported
After four months and no adjustments, the pumps are still maintaining the required minimal leakage.
Repair Costs / MTBR / Savings Labor Savings: USD $8,000/year Water Savings: USD $4,000/year
Total Savings: USD $12,000/year
Large pump with DualPac 2212 and Live Loading being installed.
About Us
Chesterton® is a world leader in helping process industry companies and manufacturers improve the reliability and efficiency of their rotating, stationary, and fluid power equipment platforms. We are known across a wide range of industries for our award-winning pump and valve sealing solutions, applications expertise, equipment maintenance and wear-prevention products, and knowledgeable hands-on local service. Chesterton product range includes mechanical seals, packing and gaskets, industrial lubricants and coatings.
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EN350826. Issued 03/2020
Technical data reflects results of laboratory tests and is intended to indicate general characteristics only. A.W. Chesterton Company disclaims all warranties expressed or implied, including warranties of merchantability and fitness for a particular purpose. Liability, if any, is limited to product replacement only. Any images contained herein are for general illustrative or aesthetic purposes only and are not intended to convey any instructional, safety, handling, or usage information or advice respecting any product or equipment. Please refer to relevant Safety Data Sheets, Product Data Sheets, and/or Product Labels for safe use, storage, handling, and disposal of products, or consult with your local Chesterton sales representative.