Features： 1、Proportional pumps are powered by flowing pressure water with little loss of water pressure and no other power facilities. 2、Using the hydraulic power of proportional pump as engine, the piston and connecting rod in proportional pump are driven, and liquid additives are directly inhaled to dissolve in water. 3、Proportional pump can adjust the proportion of additives in water according to the actual situation to achieve the best effect of additives. 4、Professional manufacturing, exquisite workmanship, stable performance, low power consumption, long service life. 5、The installation and use method is simple, and it can be applied to fertilizer irrigation, horticultural flowers, livestock breeding and other industries. 6、It is also suitable for equipment maintenance, environmental protection and water treatment, industrial hygiene, vehicle cleaning, food processing, printing or other industries requiring specific dilution. Specification： Condition: 100% Brand New Item Type: Fertilizer Injector Material: PP Interface: G3/4in Proportion Range: 1-5% (1:20-1:100) Flow Range: 12L/h-3000L/h Working Water Pressure: 0.3-4bar Continuous Work: >100T Water Flow Temperature: 45 Degree C Inlet and Outlet: 25mm / G3/4in Inlet and Outlet Diameter: Approx. 32mm / 1.3in, Approx. 25mm / 1.0in Weight: Approx. 1460g / 51.5oz Proportional Pump 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. Package List： 1 x Proportional Pump 1x Hollow Billet (With Filter) 1 x Bag of Round Gaskets (5Pcs) 1 x Wrench 1 x Clip 1 x Instruction Manual