| Includes | equipment for generating, handling, blending, metering, and feeding to a liquid process stream liquid chemicals such as sodium hypochlorite, liquid chlorine, mannich polymers, emulsion polymers, sodium bisulfite, ferric chloride, ferric sulfate, hydrofluosilicic acid, other liquid acids, caustic soda (sodium hydroxide), other liquid alkaline chemicals, and other liquid chemicals. 46 33 41, liquid chemical feed system coordination and integration, may include requirements for coordinating and integrating liquid chemical pumps and feed equipment. 46 33 42, diaphragm-type metering pumps, may include electric motor-driven equipment, solenoid pumps, and other types of diaphragm-type metering pumps. |