Cấp nước & Phân phốiCâu 23 / 360
A hot water recirculation loop is added so users get hot water quickly at a remote fixture. What is the main plumbing purpose of the recirculation return line?
a.To increase static pressure at the fixture
b.To act as a backflow preventer
c.To keep hot water moving so it stays hot near the fixtures, reducing wait and wasted water
d.To replace the need for pipe insulation
Giải thích
A recirculation loop continuously moves hot water so it remains hot near distant fixtures, reducing the wait for hot water and wasted water. It does not raise static pressure, is not a backflow preventer, and insulation is still recommended to reduce heat loss in the loop.
Trích dẫn luật: 2022 California Plumbing Code (CPC) §610.0Luyện miễn phí toàn bộ 360 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A janitor's service sink has a hose thread faucet used with cleaning chemicals. What is the simplest code-recognized protection against back-siphonage at that outlet?
- You are supporting horizontal CPVC hot water pipe, 1 inch and smaller. What is the maximum horizontal support spacing typically required?
- A reduced pressure principle assembly (RP) discharges water from its relief port during a fouling event. Where must the relief port discharge terminate?
- Which standard applies to cross-linked polyethylene (PEX) tubing used in potable water distribution?
- A residential water heater is 55 feet of developed pipe run from the farthest bathroom. Using standard practice, which change would most directly reduce the long wait for hot water without adding a recirculation pump?
- An air gap and a reduced pressure principle assembly (RP) are both acceptable for high-hazard protection. What is one key advantage of an air gap over an RP assembly?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB C-36 Plumbing Trade Examination · Quy trình kiểm tra