1. Installation of water pipes, horizontal section or upward and that will make the water inlet pipe gathered in the air, reduce the degree of vacuum pipe and water pump, to pump water head decreases, reduce the amount of water. The correct approach is: the horizontal section should be slightly inclined to the direction of the water level, should not, not up.
2. Pipeline centrifugal pump inlet and the elbow is directly connected to this will make the water flow through the elbow into the impeller when the uneven distribution of. When the inlet diameter is greater than the pump inlet, eccentric reducer should be installed. Eccentric adjustable tube mounted on a flat part to the above, the inclined part installed in the following. Otherwise, gather air, reduce the amount of water or pumping water, and impact sound. If the water inlet pipe and the water inlet of the water pump is equal to the diameter, between the water inlet of the water pump and the elbow with straight pipe, straight pipe length of not less than 3 times the pipe diameter of 2 ~.
3. Pipeline centrifugal pump outlet pipe above the normal water level in the pool in the pool if the water outlet above the normal water level, although the increase of the pump head, but reduces the flow. As a result of terrain conditions, the water outlet must be high out of the water level of the water, should be installed in the elbow and the short pipe, the pipe become siphon, reduce the height of the outlet.
4. The end of the valve, the water inlet pipe of the next section is vertical such as installation, the valve can not be closed, resulting in Water Leakage. The correct installation method is: a water inlet pipe valve, the next best is vertical. If the terrain conditions can not be installed vertically, the angle between the pipe axis and horizontal surface should be above 60 degrees.
