Thiết bị & Bình nước nóngCâu 184 / 360
A house has a water meter with a check valve installed on the service. What must be added at the water heater to control thermal expansion?
a.A second T&P valve
b.A larger cold water pipe
c.An expansion tank or approved expansion control device
d.A pressure-reducing valve on the hot side
Giải thích
When a check valve, backflow preventer, or pressure-reducing valve creates a closed system, heated water cannot expand back into the main and pressure spikes. An expansion tank or listed expansion control device must be installed to absorb that thermal expansion. Without it, the relief valve may weep or the tank may be stressed.
Trích dẫn luật: 2022 California Plumbing Code (CPC) §608.3Luyện miễn phí toàn bộ 360 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A water heater drain pan must have a minimum depth of:
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