On Board CNG

The CNG tanks have cylindrical shape and are manufactured to tolerate a working pressure of 200 bar. Various CNG cylinders are available with different diameters and lengths. CNG cylinders are also produced in various specifications, according to the technical features required by different countries.

Research indicates that CNG cylinders can provide safe and reliable fuel storage on a vehicle if properly installed, protected, filled, and maintained. Owner or operators are strongly encouraged to implement practices within their fleets to ensure that CNG cylinders provide safe operation over the life of the vehicle.

Natural gas vehicles with compressed natural gas (CNG) cylinders should be periodically subject to either a general or in-depth inspection to assess the CNG cylinder condition and fitness for continued service. Different countries have different norms for rechecking of cylinders periodically.

On Board CNG Size Chart
 
Nominal water
capacity		 Gas capacity
Cu.m.(Approx)		 Diameter
mm		 Length Approximate
Weight
20 5 232 650 25
22 5.4 232 700 28
25 6.3 232 780 32
28 7 232 860 34
30 7.5 232 910 37
50 12.5 232 1450 54
30 7.5 267 725 36
35 8.75 267 825 40
40 10 267 925 44
45 11.25 267 1025 49
50 12.5 267 1125 53
60 15 267 1325 62
75 18.8 267 1625 77
80 20 267 1720 81
100 25 267 2120 97
45 11.3 317 770 49
50 12.5 317 840 52
55 13.8 317 910 57
60 15 317 980 61
65 16.3 317 1050 64
70 17.5 317 1120 69
75 18.8 317 1190 72
80 20 317 1260 76
90 22.5 317 1400 84
100 25 317 1550 92
57 14.3 356 790 64
60 15 356 815 66
62 15.5 356 840 67
63 15.75 356 850 68
65 16.3 356 870 69
70 17.5 356 925 76
75 18.8 356 980 80
77 19.3 356 1010 82
78 19.5 356 1020 83
80 20 356 1035 84
82 20.5 356 1070 86
85 22.5 356 1105 89
90 22.5 356 1145 91
100 25 356 1255 99
110 27.5 356 1380 108
113 28.3 356 1400 108
135 33.75 356 1655 127
150 37.5 356 1820 135
70 17.5 406 760 86
90 22.5 406 930 102
100 25 406 1015 110
110 27.5 406 1100 118
120 30 406 1180 126
140 35 406 1340 141
198 49.5 406 1820 182
200 50 406 1845 185