Mechanical diaphragm metering pumps use flexible diaphragms instead of pistons to achieve reciprocating motion under the action of a drive mechanism, and complete the suction and discharge of media by changing the volume of the pump chamber. This series is suitable for fluid metering in low pressure situations, where the flow rate hardly changes when the pressure changes, with high metering accuracy. The mechanical diaphragm metering pump completely isolates the flowing liquid from the drive lubrication mechanism through a membrane. This product uses the latest PTFE and rubber composite membrane, which enhances corrosion resistance, greatly improves the service life of the membrane, and reduces maintenance and replacement costs. This product is designed to meet the different needs of various working conditions on site. The flow rate can be steplessly adjusted within the range of 0-100%, and it can quantitatively transport liquids without solid particles.