Universal Car Fuel Pump Gas Oil Pump Manual Hand Suction Pipe Pumping Durable For Liquid Petrol Tuning Fuel Gasoline Diesel Pump

Frequently used as a hand pump in boats for fuel supply to the out-board engine. Fast and Easy handling. Works on the vacuum principle. For Transfer of Liquids as Gasoline, Diesel, Oil, Water etc. Material: PVC, Rubber, Copper Pipe length: approx 1 M Pipe inner diameter: approx 7 MM Quantity: 2 * pipes +1 *pump Package:1PC Car Fuel Gas Pump Instructions for use: The correct way to use the suction pump is to stretch a tube into the liquid you need to pump, and first force it Squeeze the flat rubber ball to expel the air, then immediately block the outlet of the tube with your thumb, release the rubber ball, etc. The ball slowly swells and recovers. After the liquid is pumped up to fill the rubber ball, the thumb blocking the outlet is loosened. Repeated operation 1-2 times will form a continuous self-flow. This oil pump needs to rely on the pressure of air to achieve self-flow, because the inner diameter of the pipe is small and the flow rate is relatively slow. Directions are used from top to bottom. When using, keep the position of the rubber ball as low as possible.