ScaleRx Case Study

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CASE STUDY

Prevention of Limescale Deposits in Residential Water Heaters Using ScaleRX®

Issue Date: July 16, 2020

SUMMARY:

In June 2019, two Gas Tank 40 Gallon Hot Water Heaters were installed by the same contractor in two

residential homes.

The test homes were both located in Houston, TX and had similar usage rates.

After one year, the unit installed without ScaleRX® produced 500 ml (320 g) of scale deposits. Whereas

the unit installed with ScaleRX® produced zero scale deposits.

DISCLAIMER:

This case study and all content (text, data, photographs, service marks, and logos) contained herein are licensed, owned, or

controlled by American Valve, Inc., and are protected by copyright and trademark laws and various other intellectual property

rights and unfair competition laws of the United States, foreign jurisdictions and international conventions.

American Valve, Inc.

4940 Peachtree Industrial Boulevard, Ste. 390

Berkeley Lake, GA 30071

Phone: 678.684.1150

www.americanvalve.com

American Valve, Inc. - ScaleRX® Case Study

Summary of content (9 pages)

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CASE STUDY Prevention of Limescale Deposits in Residential Water Heaters Using ScaleRX® Issue Date: July 16, 2020 SUMMARY: In June 2019, two Gas Tank 40 Gallon Hot Water Heaters were installed by the same contractor in two residential homes. The test homes were both located in Houston, TX and had similar usage rates. After one year, the unit installed without ScaleRX® produced 500 ml (320 g) of scale deposits. Whereas the unit installed with ScaleRX® produced zero scale deposits.
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APPLIED TECHNICAL SERVICES, INCORPORATED 1049 Triad Court, Marietta, Georgia 30062 • (770) 423-1400 Fax (770) 424-6415 METALLURGICAL TEST REPORT Ref. 332143 Rev. 1* Date: June 23, 2020 Kara Roth American Valve 4940 Peachtree Industrial Blvd., Suite 390 Berkeley Lake, GA 30071 Page 1 of 5 Purchase Order #: Credit Card Test Procedure Material: Water Heater Deposits Hardness EDS Specifications: None provided XRD Test Results Two colorations of deposits were observed inside water heater Unit B.
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APPLIED TECHNICAL SERVICES, INCORPORATED 1049 Triad Court, Marietta, Georgia 30062 • (770) 423-1400 Fax (770) 424-6415 METALLURGICAL TEST REPORT Ref. 332143 Rev. 1 Date: June 24, 2020 Page 2 of 5 Figure 1: EDS spectrum of the lighter deposits exhibiting peaks at carbon (C), oxygen (O), iron (Fe), zinc (Zn), magnesium (Mg), aluminum (Al), silicon (Si), and calcium (Ca). American Valve, Inc.
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APPLIED TECHNICAL SERVICES, INCORPORATED 1049 Triad Court, Marietta, Georgia 30062 • (770) 423-1400 Fax (770) 424-6415 METALLURGICAL TEST REPORT Ref. 332143 Rev. 1 Date: June 24, 2020 Page 3 of 5 Figure 2: EDS spectrum of the darker deposits exhibiting peaks at carbon (C), oxygen (O), iron (Fe), nickel (Ni), aluminum (Al), silicon (Si), and calcium (Ca). American Valve, Inc.
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APPLIED TECHNICAL SERVICES, INCORPORATED 1049 Triad Court, Marietta, Georgia 30062 • (770) 423-1400 Fax (770) 424-6415 METALLURGICAL TEST REPORT Ref. 332143 Rev. 1 Date: June 24, 2020 Page 4 of 5 Intensity (cps) 5000 4000 3000 2000 1000 0 Aragonite, Ca C O3 Magnesium, Mg silicon dioxide, Si O2 20 40 60 80 2-theta (deg) Figure 3: XRD pattern (top) and reference patterns (bottom) of the lighter deposits. Aragonite (CaCO3), magnesium, and silicon dioxide (SiO2) were observed.
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APPLIED TECHNICAL SERVICES, INCORPORATED 1049 Triad Court, Marietta, Georgia 30062 • (770) 423-1400 Fax (770) 424-6415 METALLURGICAL TEST REPORT Ref. 332143 Rev. 1 Date: June 24, 2020 Page 5 of 5 Intensity (cps) 5000 4000 3000 2000 1000 0 Aragonite, Ca C O3 Aluminum Oxide, Al2 O3 Silicon Carbide, Si C 20 40 60 80 2-theta (deg) Figure 4: XRD pattern (top) and reference patterns (bottom) of the darker deposits. Aragonite (CaCO3), aluminum oxide (Al2O3), and silicon carbide (SiC) were observed.
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Figure 1: Test Unit A with ScaleRX® installed Figure 2: Test Unit B without ScaleRX® installed Figure 3: 1 liter or 320 g of scale deposit removed from Test Unit B (without ScaleRX®) American Valve, Inc.
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Figure 4: Test Unit A with ScaleRX® installed Figure 5: Test Unit A with ScaleRX® installed American Valve, Inc.
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Figure 6: Test Unit B without ScaleRX® installed Figure 7: Test Unit B without ScaleRX® installed American Valve, Inc.