Core TradesCâu 144 / 700
Excessive water velocity in copper supply piping is primarily a concern because it can cause:
a.The water to become too cold
b.The system pressure to increase permanently
c.Backflow at every fixture
d.Erosion-corrosion of the pipe wall and objectionable noise
Giải thích
High velocity (generally kept below about 5-8 feet per second) scours the inside of copper pipe, causing erosion-corrosion that thins and eventually pinholes the wall, and it produces noise. Velocity does not change water temperature, permanently raise pressure, or by itself cause backflow at fixtures.
Trích dẫn luật: 2025 CA Plumbing Code §610.0Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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