B-1.1, r. 2 - Construction Code

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8.74. A contractor or owner-builder may not use in construction work aboveground piping, valves, connections or any other material, unless they are suitable for the maximum pressure and temperature for proper operation and for the chemical properties of the liquid the piping is to contain.
The contractor or owner-builder also may not use material that cannot withstand internal stress or mechanical damage related to its use or a combustible or low-melting material subject to failure even in a light fire.
O.C. 220-2007, s. 1.