When designing and installing pipelines, the following matters shall be noted:
(1) reasonable selection of pipe diameter, large pipe diameter, small liquid flow speed and small resistance loss under similar flow, but high price and small pipe diameter will lead to sharp increase of resistance loss, increase of head of selected pump, increase of belt power, increase of cost and operation price. It should be generally considered from the perspective of technology and economy.
(2) the pressure that the extrusion pipe and its pipe can bear should be considered.
(3) the pipes shall be inserted into straight pipes as much as possible, and the accessories in the pipes shall be minimized and the pipe length shall be contracted as much as possible. When it is necessary to turn, the bending radius of the elbow shall be 3-5 times of the pipe diameter, and the angle shall be greater than 90 ℃.
(4) valves (ball valve or stop valve, etc.) and check valves must be installed on the pump's extrusion side. The valve is used to regulate the working point of the pump. The check valve can prevent the pump from reversing when the liquid flows back, and prevent the pump from water hammer attack. (when the liquid flows back, a huge reverse pressure will occur, which will destroy the pump)