Me thinks that is a class rating that does indeed come out of the steam world (like Class 125 being ok for 175 psi water).
Roland On May 7, 2013, at 11:52 AM, Art Tiroly <[email protected]> wrote: > Isn't 300 psi a high temp steam rating? > Cold water may be even more than 300 psi. > > > Arthur Tiroly _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
