Anatomy and Behaviorof a Relief ValveDirect Acting StyleOverrideRelief SettingCracking Pressure0500100005101520SystemPressureGPM Flow through Relief ValveMotorMotor LoadPoppetSpringPressureGaugeReturnTo TankTPRelief Setting:AdjustmentSystemBodyPoppetReturnTo TankPumpBodySpringAdjustment20 GPMpsi