Can a deluge valve operate properly without water pressure behind it? The system as designed is dry until the fire pump starts. I'm concerned about how the deluge would react to getting hit with a slug of water in both the case of the truck rack needing foam and in the case of a tank fire.
We are designing a fire protection system for a new petroleum products terminal (gasoline, diesel, jet, #2 FO, MDO). We have a fire pump supplying water to a balanced pressure proportioning skid using 3% AFFF. The foam concentrate/water solution then runs to a buried manifold system where it...
