Cấp nước & Phân phốiCâu 48 / 360
A carbonated beverage dispenser connects to the potable water supply, and CO2 can back-feed into copper tubing, forming corrosive carbonic acid that leaches copper. What protection does the code require?
a.A single check valve of any material
b.No protection needed
c.A gate valve
d.A backflow preventer specifically listed for carbonated beverage dispensers (and non-copper tubing after the device)
Giải thích
Carbonated dispensers require a backflow preventer listed for that use, and the tubing between the device and dispenser must be a material other than copper to avoid carbonic acid leaching copper. A plain single check, no protection, or a gate valve does not address the specific carbonation hazard and copper corrosion risk.
Trích dẫn luật: 2022 California Plumbing Code (CPC) §603.0Luyện miễn phí toàn bộ 360 câu hỏi — không cần đăng ký.
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