NIKKISO EIKO The AH series metering pump is a reciprocating diaphragm type quantitative pump, using a vertical motor to save installation space. It is widely used in chemical plants, water supply and drainage systems, wastewater treatment, and the quantitative delivery of acidic and alkaline solutions in industrial wastewater. NIKKISO Accumulating years of technical experience, we have improved pump performance and added new models to meet diverse needs. The NIKKISO product line mainly includes: AHA01, AHA11, AHA12, AHA21, AHA22, AHA31, AHA32, AHA41, AHA42, AHA51, AHA52, AHA61, AHA62, AHC51, AHC52, AHC61, AHC62, AHC72, AHD81, AHD82. The flow range is 0.035L/min to 45L/min. Customers can choose the appropriate model based on different flow requirements. The pump head material for liquid contact includes PVC, SUS316, and PVDF, while the membrane is made of PTFE/EPDM. It can transport strong acids, alkalis, and solutions such as activated carbon and flocculants. The most suitable material for the liquid contact section is selected based on the type of liquid used. The piping options are diverse, with various connection methods available, including flexible hoses, rigid pipes, and flange connections. The standard motor has a 380V rating, with explosion-proof and variable frequency motors also available. Custom models with non-standard voltage ratings can be ordered according to regional voltage requirements. The commonly used model AHA42 metering pump, with a flow rate of 4.6L/MIN, is the most widely used model. It is easy to disassemble and install, has fewer parts, is easy to replace, has a one-piece diaphragm, which is more durable, and has a plastic pump head which is more corrosion resistant. The motor is equipped with a waterproof cover, and the protection class is upgraded to F grade IP55, which is more suitable for outdoor installation. Suitable for the addition of chemicals in water treatment plants within industries such as chemical processing, papermaking, electroplating, circuit boards, waterworks, and wastewater treatment plants; automatic spraying equipment for automatic chemical addition; dosing processes for corrosion and scale prevention agents in boilers; adding disinfectants to swimming pools and baths; adding chemicals to the production lines of circuit boards; adding disinfectants, coagulants, and sizing agents to papermaking; adding chemicals to electroplating production lines; and adding disinfectants, dyes, and additives related to food production, among other chemical addition processes in various manufacturing stages.