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Safety Valve Pressure Settings

PCBOILERMAN Member Posts: 11
We have two HP fire tube boilers at a MAWP of 150 psig. If additional safety valves are used, what does it mean when the complete range of pressure settings of all the safety valves shall not exceed 10% of the highest pressure to which any valve is set? From NYC boiler code Part 14.  


  • Just A Guess,,,

    but I would think MAWP + or - 10% of valve setting is all that is allowed.
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