... * 2mm 4.40year's history experience IC card prepaid gas meter Main technical parameters and characteristics: 1. JRB1.6, JRB2 ... gas meter, the largest flow is 2.5m3 / h, the maximum working pressure of 10kPa. 2. requiremant: Natural gas quality should be consistent with ... electronic display ensure the accuracy of gas meter. 8. LCD can display the gas volume, accumulated gas volume, valve status, battery ...