1. Advances in Plural-Component Equipment Technology Eric Rennerfeldt Product Marketing Manager Graco Inc. May 1, 2013

2. Agenda Pros & Cons of Hot Potting 1 Advances in Coatings & Two-Component Equipment 2 How to Select the Right Equipment 3

3. Protective Coatings Applications Shipyards Rail shops Tank linings Oil and gas facilities Offshore platforms Steel fabrication Pipe coating 3

4. Plural Component Protective Coatings Two-Part Materials –Two-part epoxies –Two-part urethanes –Hybrid, quick setting urethanes –Polyureas 4

5. Reasons for Hot-Potting The majority of two-component materials are applied with single-component sprayers Why? –Smaller up-front equipment investment –Easy to use –Comfort level –Some kits are pre-measured which gives a level of confidence 5

6. Single Component Sprayer 1 motor drives 1 pump lower to pump pre-mixed material 6 Air Motor Pump Lower Fluid inlet Fluid outlet

7. Operation of a common 2-Ball Piston Pump Up stroke (Fill stroke) Piston ball checks Lower ball opens Fluid fills the pump 1 st - ½ volume is pumped out Down stroke Lower ball checks Piston ball opens 2 nd - ½ volume is pumped out 7

8. Drawbacks of Hot-Potting 8 Chance for human error when measuring –Partial kits or forgetting to add the catalyst High solvent costs –Requires more solvent to flush entire system High labor costs –Especially for larger projects Less Ergonomic –Physical strain when mixing

9. Drawbacks of Hot-Potting 9 Coating performance –More solvent may be used to thin material and extend pot life –Solvent increases cure time, which reduces productivity –Hot-potting may not be suitable for the most advanced materials Material waste –Throw away unused mixed material at end of day –Need to flush entire system before every break Higher VOCs –More solvent in the environment

10. Coatings are Evolving Less solvent to help the environment Faster cure times Shorter pot life drives need for advanced equipment Material advancements create better performing end product Coating performance drives demand for two-component equipment 10

11. Advances in Two-Component Equipment Old Fixed-Ratio Systems 3 legged systems 2 materials, 3 pumps –More hardware, more difficult, more wear parts New Fixed-Ratio Systems 2 legged system 2 material, 2 pumps –Easier to understand 11 ABAAB

12. Fixed Ratio Fluid Theory 12

13. Advances in Two-Component Equipment Importance of ratio assurance systems –Failure points will cause a change in pressure –Balanced A & B pressures are necessary for ratio assurance 13 Piston shaft Piston seat Piston ball Piston seals Throat seals Lower ball Lower ball seat Cylinder wall Fluid supply

14. Advances in Two-Component Equipment Improved ratio assurance systems monitor both A and B pressures –Capable of preventing coating failures caused by: Worn seals, plugged filters, running out of material, leaking valves, etc. – New systems are difficult to bypass until problem is fixed 14

15. Dosing Technology (Variable Ratio Systems) 15 A and B dosing

16. Dosing Technology (Variable Ratio Systems) 16 A metering valveB metering valve Mix manifold

17. Dosing Technology Advancements Old Alternating Dosing –A and B alternate back and forth at the same pressure Okay for lower flow rates Requires longer integration hose for proper mixing New Injection (continuous) Dosing –A runs continuously while B injects into A at higher pressure Allows for higher flow rates and shorter integration line Higher precision ratio accuracy 17 Advances in Two-Component Equipment

18. Data Reporting Advances –Standard on many systems Confidence the job was done right Diagnostic support 18 USB Port Advances in Two-Component Equipment

19. Simplicity –Most manufacturers have out of box solutions to go from hot- potting to two-component systems –Focus on ease of operation and ratio assurance Accessories –Accessories have evolved to handle higher pressures, temperatures and flow rates –Hoses, heaters, gun and manifolds 19

20. Selecting Two-Component Equipment Items to consider: Properties and type of material being sprayed –Epoxy, Urethane, Hybrid Urethane, etc. –Mix ratio, pot life, solvent content, viscosity Recommended spray temperature and pressure 20 Mix Ratio Fluid Pressure Heat Spray Pattern Production requirements –Tip size, number of guns, distance to substrate

21. Selecting Two-Component Equipment More items to consider: Material handling –Container size? 5-gal (20L) or 55-gal (200L) drums –Does the material need to be pre-heated or agitated? –Will it require a transfer pump from the container? Fixed ratio or variable ratio? –Fixed – ideal when dedicated to one material –Variable – change ratios quickly or hit odd ratios Safety requirements –Hazardous location approvals 21

22. More items to consider: Frequency of use –Is this equipment for one job or many jobs? Rent or buy? –Is this a 24-7 operation? Is it a simple job that happens 1-2 times a month? Ratio assurance –If off-ratio conditions exist, is auto shutdown important? –Am I required to verify that the coatings were applied properly and on ratio? –Am I required to provide a report? Technical support –Will my crew ever need technical support? Selecting Two-Component Equipment 22

23. Basic Unheated System 23 B A MIX Proportioner Mix line Gravity Feed S Ideal for long pot life materials No heat system Lowest investment (about 2 times the price of a large airless rig) Note: Static mixer size and placement may change depending on application and proportioner type (pertains to all systems)

24. Basic Heated System 24 Good for heat-assisted spray Shorter pump-to-substrate distances Medium investment B A MIX Proportioner Fluid Heaters Mix line Gravity or pump feed S Spray Gun

25. Heated – Remote Manifold System 25 Ideal for material requiring heat to spray Longer pump-to-substrate distances Higher investment S A B MIX Dual Heated hose Proportioner Fluid Heaters Mix line Volume-balanced hoses Gravity or pump feed Max length depends on pot-life Spray Gun

26. Heated Supply, Remote Manifold System 26 A B MIX Dual Heated hose Proportioner Fluid Heaters Gravity or pump feed heated supply Volume-balanced hoses S Max length depends on pot-life Mix line Higher production heated applications Longer pump-to-substrate distances Higher investment Spray Gun

27. Mix-at-gun applications 27 Ideal for similar viscosity, fast setting materials Short or long pump-to-substrate distances Higher investment A B GUN Dual Heated hose Proportioner Fluid Heaters Gravity or pump feed heated supply Volume-balanced hoses S Static mix or impingement gun

28. Who Benefits From 2-Component Equipment? Owners –Improved productivity –Higher quality –Less material waste Environment –Less material waste –No thinning required –Lower VOCs 28 Painters –Consistent pattern –Less fatigue Spray at lower pressure No hand-mixing required Mechanics –Easier repair No catalyzed material in pumps –Longer pump life Coating Suppliers –Confidence in quality

29. Case Study - Epoxy for Water Tanks Producer of high quality water tanks –5-gal kits are mixed by hand and sprayed with airless pump –Material: 2-part epoxy –Pot-life: 4-hrs at 75F Results –Material savings Day one resulted in 69% decrease of waste Annual savings estimate was $15,000 –Improved quality Improved mixing accuracy Consistent and repeatable coating thickness Lower spray pressure with less overspray Reduced the number of coatings from two to one 29

30. Benefits of Two-Component Equipment Spraying materials accurately and on ratio results in: –Less rework – more even coating –Faster curing – heated coating –More even film builds, less sagging –Coating flows better on substrate –No surging or high spots Ensures coating suppliers that their materials achieve the desired results 30

31. Make more money! Expand your business –Allows you to bid on projects that require advanced fast-curing materials Reduce costs –Less paint waste - mix only what you need –Less solvent waste Increased productivity –Finish jobs sooner, less cleanup at the end –Less downtime rebuilding and cleaning pumps Reduced liability –Rework costs due to off-ratio mistakes 31

32. Summary In recent years, two-component equipment has evolved to meet the demands of advanced two- component coatings The majority of protective coatings are two-component, yet the majority of equipment used to apply them is single component Advances in two-component equipment technology: –Allow for simplified, reliable use of two-component sprayers –Provide confidence that two-part materials are applied accurately and on-ratio –Improve overall profitability 32

33. Questions? 33

34. Thank you! 34