SECTION 380:25-5-24. Non-standard cast iron boilers

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(a) The maximum allowable working pressure of a non-standard boiler composed principally of cast iron shall not exceed 15 psig for steam service or 30 psig for hot water service.
(b) The maximum allowable working pressure of a non-standard boiler having cast iron shell or heads and steel or wrought iron tubes shall not exceed 15 psig for steam service or 30 psig for hot water service.

                    
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