NFPA 11 Foam Solution Fittings

[MatthewJWillis]

Greetings,

We are discussing the change in the 2010 of section 4.7.3.4.1

The gist of the matter is 4.7.3.2 states fittings are to be standard weight.

4.7.3.4.1 seems to require Extra Heavy duty fittings.

Can standard rated grooved E's and Tee's be used inside the fire area? Using the required couplings of course. Or do we need to go Sch 80?

R/
Matt

4.7.3.2 Fittings shall not be less than standard weight.
4.7.3.3 Cast-iron fittings shall not be used where dry sections
of piping are exposed to possible fire or where fittings are
subject to stress in self-supporting systems.
4.7.3.4 Listed rubber or elastomeric-gasketed fittings shall be
permitted to be used in fire-exposed areas if the foam system is
automatically actuated.
4.7.3.4.1 Listed rubber or elastomeric-gasketed fittings shall
be permitted to be used in fire-exposed areas if the foam system is manually actuated and high-temperature-rated extraheavy duty grooved fittings and gaskets have been tested inaccordance with API 607 and meet these criteria within industry standards.4.7.3.5* Galvaniz