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、Using the hydraulic power of proportional pump as the engine, the piston and connecting rod in the proportional pump are driven, and the liquid additive is directly inhaled to dissolve in the water flow. 4、Regardless of the flow rate and pressure, the dose of the solution is always strictly proportional to the amount of water entering the equipment. 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. Features: High-quality PP material, it is durable, corrosion-resistant and long-term use. Proportional pumps are powered by flowing pressure water with little loss of water pressure and no other power facilities. Using the hydraulic power of proportional pump as the engine, the piston and connecting rod in the proportional pump are driven, and the liquid additive is directly inhaled to dissolve in the water flow. Regardless of the flow rate and pressure, the dose of the solution is always strictly proportional to the amount of water entering the equipment. 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. Specification: Condition: 100% Brand New Item Type: Fertilizer Injector Material: PP Optional Thread&Proportion Range: G1in & 0.4-4%, G3/4in & 0.2%-1% G1in & 0.4-4% Type: Proportion Range: 0.4-4% (1:25-1:250) Flow Range: 20L/H-2500L/H Working Water Pressure: 0.2-3bar Continuous Work: >100T Water Flow Temperature: 4-30 ° C Weight: Approx. 1830g / 64.6oz Outlet Diameter: Approx. 32mm / 1.3in Inlet Diameter: Approx. 25mm / 1.0in Fertilizer Injector Size: Approx. 49x16cm / 19.3x6.3in G3/4in & 0.2%-1% Type: Proportion Range: 0.2%-1% (1:100-1:500) Flow Range: 12L/H-3000L/H Working Water Pressure: 0.3-4bar Continuous Work: >100T Water Flow Temperature: 45 ° C Inlet Outlet Diameter: 25mm / G3/4 Weight: Approx. 1443g / 50.9oz Outlet Diameter: Approx. 32mm / 1.3in Inlet Diameter: Approx. 25mm / 1.0in Fertilizer Injector Size: Approx. 35x16cm / 13.8x6.3in Adjust the proportion of use: Proportional pump can adjust the proportion of additives in water according to the actual situation to achieve the best effect of additives. The specific methods are as follows: 1. Loosen the screw and remove the U-shaped adjusting lock from the upper part of the proportional pump. 2. Predict the proportion of liquid additives and water according to the scale ratio on the proportional pump. Counterclockwise adjustment is to increase the proportion of liquid additives. Clockwise adjustment is to reduce the proportion of liquid additives. The percentage of proportional pump is calculated according to the final water production of the proportional pump of 100. 3. Turn the regulator until the hole above the U-shaped adjusting lock is inserted into the slot of the proportional pump. 4. Put the U-shaped adjusting lock into the upper groove of the proportional pump until it is locked with each other. Note: 1. When using automatic proportional pump, ensure that the container containing liquid additives is not empty. 2. Exhaust valve: When starting the proportional pump for the first time, the valve must be pressed for several seconds to discharge the existing internal air. During this process, a small amount of water may flow out. After discharging air, close the valve quickly. 3. When installing and using, ensure that the filter device is installed at the entrance of the proportional pump. 4. If the working resistance increases in use, lubricating oil should be added to the piston to prolong the service life. 5. After the use of proportional pump use clean water to reduce corrosion, extend the service life of the proportional pump. 6. Please note that the colors of the accessories will be sent randomly, and make sure you will not mind before ordering. Package List 1 x Fertilizer Injector 4 x Round Gaskets 1 x Clip 1 x Hollow Billet (With Filter) 1 x Wrench 1 x Instruction Manual