rdinary water pumps (mostly centrifugal pumps) are designed for large-volume water transportation, while micro pumps (diaphragm, peristaltic, gear types, etc.) focus on precise delivery of tiny fluid volumes. Their design purposes are fundamentally different.

1. Structure and size Micro pumps are highly compact with small dimensions. Most run on DC power and can be embedded inside equipment. Ordinary water pumps usually have separate pump bodies and motors, take up much space, and mostly use high-power AC motors.
2. Performance parameters Micro pumps deliver low flow rates, often measured in milliliters per minute, with relatively low head. Their strength lies in controllable and metered micro flow. Ordinary water pumps can reach a flow of several cubic meters per hour and provide high head, yet they have poor flow adjustment accuracy.
3. Working principle and medium compatibility Ordinary water pumps mainly rely on rotating impellers. They suit clean water; particles in liquid easily wear the impellers, and many require priming before startup. Micro pumps adopt diaphragm or peristaltic structures. Some are self-priming and allow dry running. The fluid can be isolated from the motor. They work with reagents and weakly corrosive liquids, and some models prevent liquid contact with the pump housing.
4. Application scenarios Micro pumps are used in instrument sampling, medical fluid delivery, household appliance water circuits, dispensing and micro dosing. Ordinary water pumps serve large-scale water transport such as building water supply, irrigation, circulating water and drainage.
5. Cost and maintenance Micro pumps consist of precision parts, leading to high cost per unit flow. Ordinary water pumps feature simple structures, easy maintenance and support long-duration heavy-duty operation.