Mich. Admin. Code R. 408.4222 - Safety valve setting on boilers with direct feed

Rule 222. 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.


Mich. Admin. Code R. 408.4222
1979 AC

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