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Michigan Administrative Code (Last Updated: November 16, 2016) |
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Department LR. Licensing and Regulatory Affairs |
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Bureau of Construction Codes |
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Chapter Michigan Boiler Rules |
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Part 2. EXISTING INSTALLATIONS STEAM BOILERS |
Section 408.4222. Safety valve setting on boilers with direct feed.
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In those cases where the boiler is supplied with feedwater directly from water mains without the use of feeding apparatus (not to include return traps), no safety valve shall be set at a pressure higher than 94% of the lowest pressure obtained in the supply main feeding the boiler.
History: 1979 AC.