ANSUL Engineering Specifications - INERGEN Clean Agent ...

Class AP is defined as the highest classification and Class F the lowest. ... rated resins or non-HDB rated resins were used in the manufacture of the pipe and fittings. ... hole exceed 25 mm (1 in.) in any dimension or have an area greater than 323 mm2 (1/2 sin.). Blowholes shall not be deep enough to affect the strength of the casting ... ................
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