Water Supply & Distribution第 37 / 120 题
A gauge on the building side of the meter shows a static street pressure of 96 psi with no flow. What does the plumbing code require?
a.An approved pressure-reducing valve limiting downstream pressure to not more than 80 psi
b.Nothing, because the pressure is still under 100 psi
c.An increase of one pipe size on the water service
d.An approved vacuum relief valve on the water service
解析
Where static pressure exceeds 80 psi, an approved pressure-reducing valve must be installed to hold the downstream distribution system at 80 psi or less. The 100 psi threshold does not exist in the code; 80 psi is the trigger. Upsizing pipe lowers friction loss but does nothing to static pressure, and a vacuum relief valve protects against collapse or siphoning, not high pressure.
法律依据: UPC §608.2免费刷完整 120 道题库 — 无需注册。
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