Advantages

• Simple Structure: It mainly consists of mechanical components such as impellers, gears, and dials, without complex electronic parts, so its structure is relatively simple.
• Low Cost: Owing to its simple structure and manufacturing process, both raw material costs and production costs are low. It is affordable and suitable for large-scale promotion and application.
• No Power Supply Required: It relies on the power of water flow to drive the impeller rotation for metering, without the need for external power supply. This avoids the situation where metering fails due to power outages.
• High Stability: It is not easily affected by external issues such as electromagnetic interference. It can work normally in harsh environments like high temperature, low temperature, and humidity, and operate stably for a long time.
• Easy Installation and Maintenance: The installation method is relatively simple; generally, it only needs to be installed on the pipeline according to the specified direction and position. The maintenance cost is also low—usually, only regular cleaning and calibration are required, without the need for professional technicians to perform complex operations.

Disadvantages

• Low Metering Accuracy: The metering accuracy of mechanical water meters is greatly affected by factors such as water flow rate, water quality, and pipeline installation method. In the case of small water flow, inaccurate metering may occur; in the case of large water flow, metering errors may also arise due to wear of mechanical parts or increased resistance.
• No Real-Time Monitoring or Remote Data Transmission: Water consumption data can only be obtained by manually reading the values on the dial. It cannot realize real-time monitoring or remote data transmission, requiring on-site manual meter reading, which is inefficient and increases labor costs and management difficulties.
• High Requirements for Water Quality: Impurities, sediment, rust, and other substances in water can easily block the impeller and gears, affecting the normal operation of the water meter or even causing damage to it. Therefore, a filter needs to be installed in front of the water meter, which also increases certain costs and maintenance workload.
• Large Size: Compared with smart water meters, mechanical water meters are larger in size and occupy more space, which may be restricted in some installation environments with limited space.
• Inability to Achieve Intelligent Management: It does not have intelligent functions and cannot support intelligent management methods such as automatic data statistics, abnormal water consumption alarms, and remote valve control.