Features:
1) J series gas meters are suitable for measuring flow rate of town gas, 
    natural gas, marsh gas and liquefied petroleum gas etc
2) High sensitivity, accurate measurement, easy to install and maintain, and 
    with reverse-proof device (that prevents the counter set from turning 
    reversely)
3) As the special surface treatment technology is adopted, the gas meters
    have strong corrosion resistance and long service life
4) Diaphragm structure
5) Consists of outer casing, measuring unit and counter set