Thank you all for the reply. The relief valve is 6" mounted on a common 12" discharge from 2 elctric and one diesel pumps, all taking suction from a well. The concern is that the underground fire mains are old (about 40 years old) and any failure in the relief valve may cause a lot of more...
I have a customer concerned about the fire pump main relief valve failing, which may cause damage to the fire protection piping due to high pressure in the system. They are suggesting installing a 2nd relief valve as a back up. Is this a good idea, where can this be installed?
