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P-1303.13 Water pressure-reducing valve or regulator. Where the water pressure supplied by the pumping system exceeds 80 psi (552 kPa) static, a pressure-reducing valve shall be installed to reduce the pressure in the rainwater distribution or water supply system piping to 80 psi (552 kPa) static or less. Pressure-reducing valves shall be specified and installed in accordance with Section 604.8.
P-1303.14 Distribution or water supply pipe. Distribution piping or water supply piping utilized in rainwater collection and conveyance systems shall comply with Sections P-1303.14.1 through P-1303.14.3.
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