Water meter is mainly composed of housing, impeller metering mechanism and indicator mechanism,The reading of type C meter is eight digit pointer type.The reading of type E meter is the combination type of pointer wheel.The indicator mechanism of type E meter has full liquid seal type and half liquid seal type.The indicating mechanism can be kept for a long time with special liquid package.Water meter has the advantages of clear reading, high sensitivity, advanced structure, accurate measurement and long life.All the technical indexes meet the requirements of national standards.

Overload flow rate

（Q₄）Water meters use the upper limitof flow, in the overload flow, water meters are not allowed to use for a long time, only to ensure that the short time of use does not damage. Not more than an hour a day.

Common flow

（Q₃）-water meter allows for long working hours

Bounda

（Q₂）―The flow rate when the meter error limit changes between the usual flow rate and the minimum flow rate.

Min-flow

（Q₁）-Off line flow used by water meter