Stainless steel or pp material suitable for conveying polyaluminum chloride West of a domestic sewage treatment station Polyaluminium chloride fed stainless steel metering pump was corroded holes, and now the station manager for the matter quite distressed, I would like to know what material should be selected Metering pump is more durable it? In addition, this issue has not only occurred at this domestic wastewater treatment station, other plants that have been treated with the same can also happen with this situation. It is not long before the newly purchased delivery dosing pump is used Damage scrapped, the use of short cycle. Therefore, in response to the above issue, the first division of water will be more suitable for everyone to introduce PAC metering pump. In fact, the corrosion of polyaluminum chloride coagulant than the average, such as the corrosive polyferric sulfate weaker than ferric chloride is not a magnitude, much less corrosive than ferric chloride, it is recommended More than 304 stainless steel or fluoride plastic material. Nowadays, the commonly used industrial metering pump material mainly plastic material, stainless steel and fluorine plastic material. In fact, the delivery of polyaluminum chloride metering pumps do not necessarily say 304 stainless steel, 316 stainless steel or pp material can be.