Main function: Generally used as a safety valve; mainly for pressure overload protection.The surface of the pump head adopts wear-resistant phosphating process, which improves the surface hardness and has good wear resistance; it does not rust and has a beautiful appearance.The use of high-strength gears has high hardness, wear resistance and high machining accuracy.Using high-quality cyanide rubber, good sealing performance, no oil leakage, and long service life.The hardness can reach HRC40-45, and the high-precision centerless grinding is used to ensure the cylindricity of the shaft.Theoretical displacement (mL/r): 4.5Output flow (L/min)1500r/min: 6.71800r/min: 8.1Working pressure (Mpa): 0.5Maximum number of revolutions (rimin): 1800Colour: as shownMaterial: metalPackage Contents:1 x TOP-13A PumpOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.