Specifications DocumentationCategory - Pressure Relief/Safety ValveType - Model 511 - FM Pump SetsFlow - 108-163 gpm (409-617 lpm)Pressure - 121-275 psi (8.3-19.0 bar)Model - 511-1" x 1-1/2"Max. Working Pressure - 300 psi (20.7 bar)Product DocumentsNPT Drawing (PDF)NPT Drawing (STEP)BrochureFlow Capacity Chart