The gaskets for standpipe or sprinkler fire protection water system have to be certificated as UL/FM. The NFPA indicates something about the minimum requirements for this elements?
¿What type of gasket are you referring to? ¿Coupling (groove) gaskets? ¿Flange gaskets?
Flange Gasket. NFPA indicates a specific characteristics or certification which these elements need.
NFPA 13 has no requirements for flange gaskets. But they should be manufactured according to ASME B16.1 and ASTM D 1330 standards.
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