LIGHTWEIGHT & PORTABLE: Easy to store and haul, this mini utility pump offers big value in a little packageMULTIPURPOSE: Perfect for transferring water from aquariums, washing machines, water beds, water heaters, clogged sinks, and more.Description:long time to use.Large flow, stable performance and high efficiency, easy installation. Compact and light weight design, portable and easy to store.The recommended speed is 1500-3500 rpm. The pump head and flow are related to the speed. The higher the speed,the higher the head and flow. 1500 rpm, the pump head is about 1.5 meters, the flow is about 15L per minute.3000 rpm, the pump head is about 3 meters, and the flow rate is about 30L per minute.Make sure the inlet hose is sealed and as short as possible. Hoses should not exceed 9 feet (2.75 meters).It works in the temperature range of 5-49. It is recommended to install the pump on the surface for safe use.Install and start the rig. Observe whether a certain amount of fluid is drawn into the pump within 15-20 seconds.If not, check that the inlet line is properly installed on the inlet pump. Don't run dry. If the pump fails to start,check the hose for kinks or blockages. The pump depends on whether the fluid is being pumped for lubrication.Specification:Material: engineering plasticColor: blackSize: about 106x37x64mm (LxWxH)Working temperature: 5-49(41-120)Tube inner diameter: about 15mmPackage Included:1pc x pumpNote:1. Due to the light and screen difference, the item's color may be slightly different from the pictures.2. Please allow 1-3cm differences due to manual measurement.