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Posted by bolerspector on February 24, 2012 at 01:48:57:
In Reply to: Steam pressure and safety valves posted by Ken on November 28, 2011 at 17:48:38:
What MAWP is stamped on your boiler? If it is stamped 15 MAWP, then steam below safety reset pressure...If it is stamped above 15 MAWP you can replace safetys and steam at pressure up to or below MAWP and safety reset pressure.
For now, perform steam accumulation test with accurate gage installed...see at what pressure safetys lift and then reset....Do not exceed MAWP stamped on boiler while testing.