What Are the Water Filling Methods for Centrifugal Pumps(Part 2)?
3. Vacuum water tank filling method For small pumping stations without bottom valves, the vacuum water tank filling method can be used. The vacuum water tank is a closed water tank made of iron sheet welding. Its volume is at least 3 times the volume of the inlet pipe. The location of the water tank should be as close as possible to the pump, and the bottom height of the water tank should also be slightly lower than the axis of the pump. The height of the vacuum water tank is generally twice the diameter of the water tank. Before starting the pump, fill the water tank with water to seal it. After the water pump is started, the water pump enters the water from the vacuum tank. As the water level of the water tank drops, a certain vacuum is formed in the water tank. The water in the water tank will enter the water tank through the water inlet pipe under the action of atmospheric pressure, thereby forming a water circulation. The centrifugal pump starts to operate normal...