Composite Cylinders 

SCI Alternative Fuel Cylinders

SCI pioneered the development of a lightweight, composite fuel tank for natural gas and hydrogen fueled vehicles. In the 1970s, SCI helped the United States Department of Transportation develop the first safety standards for composite fuel tanks, and SCI manufactured the first DOT approved composite fuel tank. SCI also developed the first composite fuel tank certified under European Standard ECE R110. SCI is now the world leader in composite fuel tanks, and our fuel tanks can be certified to any safety standard in the world, including the following:

  • KHK/METI (Japan) ECE R110 (Europe)
  • ISO11439 (Europe) FMVSS 304 (United States)
  • CSA B51 (Canada) ANSI NGV2 (North America)

Compressed Hydrogen (CH) Fuel Tanks

SCI has been the leader in developing lightweight composite fuel tanks for hydrogen fuel vehicles. In the late 1970s, SCI developed one of the first hydrogen fuel tanks, a composite tank installed on a Dodge pickup truck. SCI is currently supporting the effort to commercialize hydrogen powered fuel cell vehicles, and our fuel tanks have been used for several fuel cell demonstration projects. SCI currently has the capability to design hydrogen fuel tanks for any passenger car, transit vehicle, or fleet vehicle application with operating pressures up to 10,000 psi.

Liquid Natural Gas (LNG) and Liquid Hydrogen (LH) Fuel Tanks

SCI has developed lightweight and durable fuel tanks for LNG and LH vehicles. These tanks provide a cost-effective method for storing large quantities of natural gas or hydrogen onboard vehicles. SCI can design tanks to fit the size and capacity requirements for all road or off-road vehicle application.

With a full line of cylinders, we have a product for your alternative fuel needs. Contact us for details.

SCI Hall of Fame

SCI pioneered the development of the light weight composite fuel tanks (mid 1970’s) for Natural Gas and Hydrogen (late 1970’s) powered vehicles.

SCI
Service
CNG
Equivalent
Equivalent
Model
Cylinder Diameter
Length
Water Capacity
Weight
Pressure
Capacity
Gasoline
Diesel
Neck
Number
mm
inches
mm
inches
Litres
cu. in.
lb.
PSI
SCF
Gallons (US)
Gallons (US)
Mount
ALT747
343
13.5
1115
43.9
74.0
4516
68.8
2900
678
5.5
4.9
No
ALT881E
404
15.9
3048
120.0
308.1
18802
251.0
2900
2824
23.0
20.3
Yes
ALT753
255
10.0
1870
73.6
71.4
4357
86.0
3600
743
6.0
5.3
No
ALT890S
333
13.1
1270
50.0
77.5
4730
92.5
3600
807
6.6
5.8
No
ALT890
333
13.1
1778
70.0
113.1
6902
128.5
3600
1178
9.6
8.5
No
ALT807S
333
13.1
1905
75.0
120.2
7338
154.4
3600
1252
10.2
9.0
No
ALT821
333
13.1
2180
85.8
135.0
8241
149.0
3600
1406
11.4
10.1
Yes
ALT807
333
13.1
3048
120.0
195.6
11939
211.0
3600
2037
16.6
14.7
Yes
ALT972
347
13.5
762
30.0
47.1
2877
51.0
3600
491
4.0
3.5
No
ALT867
347
13.6
889
35.0
57.2
3488
62.5
3600
595
4.8
4.3
No
ALT823F
388
15.3
1001
39.4
77.7
4744
78.0
3600
809
6.6
5.8
Yes
ALT823E
388
15.3
1850
72.8
162.8
9936
149.0
3600
1695
13.8
12.2
Yes
ALT823A
388
15.3
1943
76.5
173.0
10555
165.0
3600
1801
14.6
13.0
Yes
ALT918
388
15.3
1993
78.3
182.6
11145
171.0
3600
1902
15.5
13.7
No
ALT823B
388
15.3
2548
100.3
233.2
14231
207.4
3600
2428
19.7
17.5
Yes
ALT823D
388
15.3
3048
120.0
283.4
17294
246.5
3600
2951
24.0
21.2
Yes
ALT881S
404
15.9
1803
71.0
172.0
10496
149.0
3600
1791
14.6
12.9
Yes
ALT881L
404
15.9
1905
75.0
188.7
11514
165.0
3600
1965
16.0
14.1
No
ALT881M
404
15.9
2159
85.0
211.4
12902
177.0
3600
2201
17.9
15.8
Yes
ALT881
404
15.9
3048
120.0
308.1
18802
253.0
3600
3208
26.1
23.1
Yes
ALT982L
415
16.3
914
36.0
81.7
4984
88.0
3600
850
6.9
6.1
no
ALT810P
415
16
1397
55
137
8373
126
3600
1429
12
10.3
No
ALT982L
415d
16.3
1524
60.0
150.0
9156
126.0
3600
1562
12.7
11.2
No
ALT810A
415
16.3
1869
73.6
190.3
11614
174.0
3600
1982
16.1
14.3
No
ALT810B
415
16.3
1905
75.0
191.9
11713
180.0
3600
1998
16.2
14.4
No
ALT889S
415
16.3
2083
82.0
212.9
12995
194.0
3600
2217
18.0
16.0
No
ALT810S
415
16.3
2083
82.0
204.0
12450
190.0
3600
2124
17.3
15.3
Yes
ALT810M
415
16.3
2179
85.8
215.1
13127
188.0
3600
2240
18.2
16.1
Yes
ALT889
415
16.3
2540
100.0
266.4
16258
235.0
3600
2774
22.6
20.0
No
ALT810N
415
16.3
3048
120.0
312.9
19092
273.0
3600
3257
26.5
23.4
Yes
ALT891
462
18.2
2667
105.0
342.0
20870
272.0
3600
3561
28.9
25.6
Yes
ALT820SG
532
21.0
2032
80.0
318.1
19410
361.0
3600
3312
26.9
23.8
Yes
ALT820G
532
21.0
2180
85.8
344.6
21027
386.0
3600
3588
29.2
25.8
Yes
ALT604
183
7.2
533
21.0
9.2
563
12.1
4500
H2
.20 (Kg H2)
No
ALT988
183
7.2
490
19.3
7.0
427
11.7
5000
H2
.18 (Kg H2)
No
ALT848
432
17.0
1074
42.3
92.0
5614
132.0
5000
H2
2.15 (Kg H2)
Yes
ALT836U
432
17.0
1003
39.5
90.2
5504
131.0
5000
H2
2.11 (Kg H2)
No
ALT909s
419
16.5
2667
105.0
273.7
16700
258.0
5000
H2
6.40 (Kg H2)
Yes
ALT909
419
16.5
3048
120.0
312.9
19092
288.0
5000
H2
7.31 (Kg H2)
Yes
ALT962L
439
17.3
2976
117.2
304.1
18557
420.0
6250
H2
8.41 (Kg H2)
Yes
ALT962L
439
17.3
3048
120.0
311.8
19025
435.0
6250
H2
8.62 (Kg H2)
Yes
Alt861B
229
9.1
1093
43.1
27.4
1675
67.7
10000
H2
1.07 (Kg H2)
No
Gas Transport Cylinders can be manufactured and certified to US DOT, ISO11119-2, EIN (Pi) specifications
CNG fuel tank cylinders can be manufactured and certified to US DOT FMVSS 304, NGV2-2000, ECE R110, ISO11439, KHK (Japan), CSA B51 (Canada).

Contact a SCI Composite Cylinders Sales Representative