Specifications DocumentationCategory - Pressure Relief/Safety ValveType - Model 511 - FM Pump SetsFlow - 178-268 gpm (674-1014 lpm)Pressure - 121-275 psi (8.3-19.0 bar)Model - 511-1-1/2" x 2"Max. Working Pressure - 300 psi (20.7 bar)Product DocumentsNPT Drawing (PDF)NPT Drawing (STEP)BrochureFlow Capacity Chart