Chemical valve problems (continued)
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Thank you for your discussion. I have a certain understanding of the selection of pipeline specifications in the design drawing. Do you have any good ideas? I now want to use DN150 pipes at the inlet and DN100 pipes at the outlet, because DN125 valves are twice as expensive as DN100 valves. In addition, for the valves in the pipeline, I want to choose butterfly valves, which are hard-sealed and made of cast steel. I don’t know if they can withstand the corrosion of liquid alkali. Who is familiar with the liquid caustic soda loading device? Could you please introduce me? I am here in Daqing. The temperature in winter is relatively low, more than 20 degrees below zero. My original idea is to extend the loading pipe from the room. The diameter is yet to be discussed. It extends about 3 meters from the room. The pipe has a downward inclination. In this way, the liquid in the outdoor pipe can flow naturally to the car after filling, and the cleaning operation can be reduced in winter. In addition, regarding the choice of meter, which kind of meter is inexpensive, stable and has better accuracy?
For safety reasons, a stainless steel ball valve is used at the pump inlet (there is no other ball valve at the tank outlet), and a butterfly valve can be used at the outlet. The reason for choosing a ball valve for the inlet is that the sealing performance is better than that of a butterfly valve, which will facilitate future pump repairs. The reason for choosing stainless steel as the material is that lye corrodes ordinary carbon steel. The pipeline design is very good.