The outlet end of such tubing shall be fastened in place. Be one nominal size larger than the size of the relief valve outlet, where the relief valve discharge piping is installed with insert fittings.Be constructed of those materials listed in Section 605.4 or materials tested, rated and approved for such use in accordance with ASME A112.4.1.Not have a threaded connection at the end of such piping.How do I stop my water heater drain valve from. Can leaking overflow pipe cause damage 9. Terminate not more than 6 inches (152 mm) above and not less than two times the discharge pipe diameter above the floor or flood level rim of the waste receptor. Why does my hot water heater overflow keep discharging water 8.Discharge to a termination point that is readily observable by the building occupants.Discharge in a manner that does not cause personal injury or structural damage. discharge pipe arrangement and Table 1 below shows minimum dimensions for.
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