239 / | HD | FLUID SPRINKLING, SPRAYING, AND DIFFUSING |
124 | WITH SYSTEM FLUID RELIEF OR RETURN TO SUPPLY {3} | |
125 | DF | .~> Recirculation within nozzle (e.g., burner nozzle cooling) |
126 | DF | .~> By pressure responsive means (e.g., to sump or atmosphere) |
127 | DF | .~> Return from liquid pump outlet to supply holder (e.g., tank filling, mixing or pump unloading) |