Features 1??High-quality PP material, it is durable, corrosion-resistant and long-term use. 2??Proportional pumps are powered by flowing pressure water with little loss of water pressure and no other power facilities. 3??Regardless of the flow rate and pressure, the dose of the solution is always strictly proportional to the amount of water entering the equipment. 4??With a vent valve and accurate clear scale, it is easy to adjust dose and use. 5??This product is suitable for chemical fertilizer irrigation, equipment maintenance, horticultural flowers, animal husbandry, environmental protection and water treatment, industrial hygiene, food processing or other industries requiring fixed dilution. Specifications Condition: Item Type: Proportioner Material: PP Scale Range: 1%-10%(1:10-1:100) Flow Range: 12L/h-3000L/h Working Pressure: 0.2-6bar(kg) Inlet/Outlet: 32mm/25mm Continuous Work: >100T Operating Temperature: 1-45 ?? Size: Approx.52.5 x 15.5cm / 20 x 6.1in Weight: Approx. 2391g / 5.3lb Package List 1 x Proportioner 1 x Wrench 1 x Tube 1 x Fixing Accessory 1 Bag Accessory 1 x Piston