AnsweredAssumed Answered

Listed discharge device for foam systems

Question asked by sithichai on Feb 25, 2019
Latest reply on Feb 28, 2019 by nocivus

NFPA requires that discharge devices and foam concentrate shall be listed for use together. 

We are required to install a closed head sprinkler system to discharge foam-water solution. However, closed head (bulb type or otherwise) sprinklers in general does not have listing for foam concentrates. 


Is it possible to still design our system using closed head sprinklers based on the general clause in the NFPA which states that "where listed components are not manufactured, the equipment shall be of approved type"? 


Thank you.