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?
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?