Los Angeles municipal code

Los Angeles municipal code

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C. Internal valves, excess-flow check valves, and back-flow check valves which are installed in accordance with Subsections A or B of this ... Every excess-flow check valve shall close automatically at the rated flow of vapor specified by the manufacturer. ... from rising more than 10 per cent above the maximum allowable working pressure, except when the excess pressure is caused by fire exposure.

Title:Los Angeles municipal code
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