Features: Made of high quality PP material, it is durable, corrosion resistant and wear resistant. With deflation valve and precise and clear scale, the dosage can be adjusted and easy to use. Powered by the pressure water flow, the pressure loss is small and does not require any other power facilities. Configure precise ratio settings that are unaffected by water and pressure. This product is suitable for fertilizer irrigation, equipment maintenance, horticultural flowers, livestock farming, environmental and water treatment, industrial hygiene, food processing or other industries that require a fixed dilution. Specification:Condition: Brand NewMaterial: PPThread: G3/4inProportion Range: 0.4%-4% (1:25-1:250)Flow Range: 20L/H-2500L/HWorking Water Pressure: 0.2-3barContinuous Work: >100TWater Temperature: 4-30 ° CWeight: Approx. 1866g / 65.8ozSize:Inlet Diameter: Approx. 32mm / 1.3inOutlet Diameter: Approx. 25mm / 1.0inPump: Approx. 49x16cm / 19.3x6.3in Application: Fertilizer irrigation, equipment maintenance, horticultural flowers, domestic farming, environmental and water treatment, industrial hygiene, vehicle cleaning, food processing, printing industry, other areas that require a fixed range.Package List:1 x Proportional Pump1 x Bag of Round Gaskets (4Pcs)1 x Buckle1 x Capillary Tube (With Filter)1 x WrenchNotice:1.Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.