The Hand Pump is suitable for pumping clean water, gasoline, kerosene and liquids that are not corrosive to iron and copper, but not suitable for liquids containing fibers or other solid particles. The temperature of the pumped liquid is below 60℃ (referring to the cup type pump).

The hand pump has a compact structure, is easy to use and reliable, and can be operated by 1-2 people shaking the handle back and forth by hand. It can be used by industrial and mining, enterprises, schools, vehicles, ships, civil defense and other units.

The structural principle of the hand pump is that when the crank handle (29) is shaken back and forth by hand, the piston (7) is reciprocated through the transmission mechanism such as the shaft (21), the rocker arm (9), and the connecting rod (36). As shown in the figure, when the piston moves to the left, the volume of the pump cylinder at the right end gradually expands, forming a vacuum, and the liquid from the suction pipe (34) passes through the suction flow channel cast next to the pump body to push open the suction valve and enter the right end of the cylinder body. At the same time, the left side of the cylinder body is compressed by the piston, so that the water pressure valve (5) is pushed open, and the liquid is discharged through the discharge pipe (11). If the piston moves back to the right, the left side of the pump cylinder sucks in liquid and the right side of the pump cylinder discharges liquid, and the liquid is sucked in and discharged repeatedly in this way. This forms the operation of the pump. The upward stroke of the pump's water pressure valve is limited by the cover plate (6), and the upward stroke of the water suction valve is limited by the water pressure valve. The cover plate and the pump body are fastened with bolts (8), and the piston stroke is limited by the pump cover (14) and the pump body.

In order to be installed on a wall or other foundation, the pump body has three bolt holes.