Industrial Flow Indicators - Flowline High-pressure, variable flow indicators with a graduated flow scale on the outer viewing sleeve and an indicator ring which is magnetically coupled to an internal piston. All utilise the technique of differential pressure across a piston which, as the flow increases, moves the piston against a calibrated spring. Can be installed on any plane. Features and Benefits • Pressures up to 350 bar • Flows up to 360 L/min • Accuracy ±5% FSD • Repeatability ±1% FSD • Relatively insensitive to viscosity changes • Direct reading • Oil or water calibrated