10 Square In.2000 lbs2000 lbs2000 lbs2000 lbs2000 lbsPilotSectionHeavySpringLightSpringMain SpoolBalance OrificePilot DrainValveInletTankTankMain Spool OpeningBalance OrificeLight SpringMain SpoolHeavy SpringPilot SectionPilot DrainValveLow PressureHigh PressureVacuum PressureDrain PressureColors LegendMedium PressurePAPADetailed Schematic SymbolSimplified Schematic SymbolPSIPSIPSI