Section 408.4219. Safety valve pressure setting.

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One or more safety valves on every boiler shall be set at or below the maximum allowable working pressure. The remaining valves may be set within a range of 3% above the maximum allowable working pressure, but the range of setting of all of the safety valves on a boiler shall not exceed 10% of the highest pressure to which any valve is set.

History: 1979 AC.

                    
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