Continuous measure,memory and show the volume of cold water of passing sealed full pipes under measurement condition.

This water meter adopt piston rotating for measuring ,accuracy precise measured,register part make use of special liquid sealed ,reading clearly and appearance smart,entrance point assemble back-pressure valve that prevent water back.

Low area（Q1≤Q<Q2）max allowed error ±5％

T≤30℃,High area（Q2≤Q≤Q4）max allowed error ±2％