The document summarizes information from Chesterton about valve packing solutions. It highlights a case study where repairing leaking valves at a power plant increased efficiency by 9.9 MW. It also describes a new valve packing product, the 5800T, which combines the low friction of PTFE with the durability of graphite. Finally, it discusses a successful application of Chesterton packing at a coke plant where it significantly reduced water leakage from pumps.

1. Packing newsletter August 2007 Ron Frisard Global Training

2. What is this?? Simple way to communicate information Talk about packing news and information “Sharpen the Saw”

3. Format Three main areas 1) Highlight a piece of information on packing 2) Highlight a Chesterton packing product 3) Highlight a packing case history

4. Heat rate improvements paper Paper presented at EPRI conference on increased heat rate at fossil plant after repairing leaking valves The reduction of leakage accounted for an increase of 9.9 MW

5. Valve’s repaired Of the 138 valves tested during the survey, 47, or 34%, were leaking. All 25 of the large and medium leakers important to heat rate were recommended for repair or replacement during the next scheduled outage.

6. Improvement in heat rate

7. To get the entire paper The website address: www.leakdetect.com/files/ HeatRate &Max Load .pdf

8. Bet you didn’t know – 5800T Facts: Type: Valve packing Uses: Extremely low packing friction Is a hybrid of 5800 wedge and new innovative yarn

9. New yarn in 5800T Made of the same construction as 1600 yarn except using PTFE fiber mesh instead of Inconel Inconel wire mesh Chesterton 1600 / 1601 PTFE fiber mesh Chesterton 5800T sealing rings

10. Results: Get a packing with the low friction of PTFE but mostly graphite Breakdown of parts (weight) Breakdown of PTFE in ID rings (weight)* Total % of PTFE in complete set* * Used .250” size as reference, PTFE content changes slightly with cross section

11. CMS case history - details Coke Plant, Ashland, KY Quench Water Pit Pumps (3) Media: 190’F water a submersible floor pump was installed, but could not control the volume of water leakage the leakage was so bad that water had covered the first three bottom steps of the entrance ladder and was over the pump bases sleeve has 3 5/8” outside diameter and the OEM box bore has 4 5/8” with a depth of 2 ½”

12. CMS Success Story - Installation 3 pumps were in extremely very poor condition shaft sleeves had excess wear due to packing wear the packing cross section at 12 o’clock was less than 3/8”, while the cross section at 6 o’clock was more that 5/8” 2 rings of ¾” Style 1830 packing were smashed to conform white CMS was rolled into cigar shaped pieces and hand packed into the stuffing box pumps were started and run for 30 minutes to allow the CMS to expand CMS was injected until a drip rate of 10-15 drop per minute

13. CMS Story - Results A week after installation, the pumps were inspected and leakage was actually less than 10-15 drops and no one had adjusted the pumps Customer was extremely pleased with the additional run time

14. Any questions… If you have any questions or comments about this on-line newsletter please contact [email_address] Also please email any case histories you might want to share.