Description: When the fluid flows through the venturi tube, that will bring vacuum. The fluid caused the vacuum is recognized as moving fluid. For the irrigation injector, the moving fluid is the irrigation water. The vacuum produced by venturi tube imbibe fertilizer and chemical into moving water. Venturi tube is drived by water, namely they drive by the main irrigation tube pressure. Operating energy of these device can reduce the irrigation water load of water pipeline. Features: Made of quality engineering POM plastic, good workmanship, sturdy and . With outstanding chemical resistance to most chemical. Efficient and compact differential pressure injector device. Economic and lower cost choice for you. Suitable for 1/2", 3/4" or 1" BSP inlet/outlet connector. Applicable for agriculture irrigation system fertilizer and chemical injection. Specifications: Condition: 100% Brand New Material: POM Plastic Inlet/Outlet Thread Size: 1/2 inch, 3/4inch, 1inch (Optional) Color: as picture Rate of Flow Range: 1/2 inch: 0.29~0.81 M3/H, 0.7~0.95bar 3/4 inch: 0.65-2.42 M3/H, 0.7-9.5bar; 1 inch: 1.82~6.34 M3/H, 0.7-9.5bar Suction Capacity: 1/2 inch: 3~37 L/H 3/4 inch: 9~92 L/H 1 inch: 34~279 L/H Dimension: G1/2inch Size: Approx. 14.2 x 7.4 x 2.03cm / 5.6 x 2.9 x 0.8inch G3/4inch Size: Approx. 14.2 x 7.3 x 2.57cm / 5.6 x 2.9 x 1.0inch 1inch Size: Approx. 19.5 x 9.3 x 3.25cm / 7.7 x 3.7 x 1.3inch Package Weight: 28~92g Package Included: 1 x Irrigation Fertilizer Injector