Electromagnetic diaphragm metering pump is a type of metering pump, which is a special volumetric pump that can measure the fluid being transported. A metering pump generally consists of a control part, a driving part, a transmission part, and an overcurrent part. The main difference between an electromagnetic diaphragm metering pump and other metering pumps is the driving part.

Electromagnetic diaphragm metering pump is a type of metering pump designed to transport low flow and low-pressure liquids driven by an electromagnet. It is popular in the industry for its simple structure, easy control, low energy consumption, accurate measurement, convenient adjustment, and low price. Its design principle is "simple and convenient", but its disadvantage is that the metering flow rate is small (generally below 90L/h), and the metering pump has relatively low requirements for pipeline pressure, which also limits its industrial application in some aspects.

The electromagnetic diaphragm metering pump was designed and manufactured by Milton Roy Company in the United States in 1978, and several foreign brands have emerged since then, either domestically produced or assembled domestically, with relatively reliable quality. In 1997, domestically produced electromagnetic diaphragm metering pumps with independent intellectual property rights began production, breaking the monopoly of foreign brands in the market.

The quality of electromagnetic diaphragm metering pumps mainly manifests in the following aspects:

1. Material selection: Due to the fact that metering pumps generally transport highly corrosive liquids, there are significant requirements for corrosion-resistant materials that come into direct contact with the transported liquid. The material selection is divided into structural element materials and sealing element materials, and the principle of material selection is the corrosion resistance and processing performance of the material.

2. Pump head structure: The pump head is the overcurrent part of the measured fluid, and the quality of the metering pump is generally reflected in its structural rationality, sealing performance, and corrosion resistance