Plumber Red Seal · Question
Connecting a copper water line directly to a galvanized steel water line is likely to cause what problem?
When two dissimilar metals like copper and galvanized steel are in contact in the presence of an electrolyte (water), they form a galvanic cell. This causes the
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Question: Connecting a copper water line directly to a galvanized steel water line is likely to cause what problem?
Answer options:
- Water hammer
- Reduced water pressure ✅ Galvanic corrosion
- Thermal expansion
Correct answer: Galvanic corrosion
Explanation: When two dissimilar metals like copper and galvanized steel are in contact in the presence of an electrolyte (water), they form a galvanic cell. This causes the more active metal (zinc coating on the steel) to corrode rapidly, leading to leaks and pipe failure.
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