CNG CYLINDER

Steelhead Composites’ lightweight 11 inches. (280 mm) diameter 3,600 psi (250 bar) CNG cylinders ranging in water volume of 30 Liters to 140 Liters. These CNG cylinders are aluminum lined fully overwrapped composite pressure vessels with 1-1/8 inches. (28.6 mm) diameter port opening on each end. One port of the CNG cylinder is fitted with a solenoid valve that integrates a thermally activated pressure relief device. Because of their construction using seamless aluminum liners, Steelhead Composites’ CNG cylinders can be counted on for being safe, gas-tight, robust, and tough against impact and abuse.

These small CNG cylinders have been developed to fill the need for small commuter vehicles, luggage handlers, vehicles with under-chassis integration and customized enclosed-space application. Because of their construction using seamless aluminum liners, Steelhead Composites CNG cylinders can be counted on for being safe, gas-tight, robust and tough against impact and abuse. In addition, our cylinders can assure maximum fill capacity under fast fill conditions.

FEATURES & BENEFITS

SUPERIOR STORAGE

Most complete fast-fill and negligible permeation

HIGH CYCLE LIFE

Fill and empty repeatedly with no concern of liner collapse

SAFE

Begin leak-before-burst feature eliminates the possibility of catastrophic failure during operation

AVAILABLE SIZES
EQIVALENT GGE OVERALL LENGTH A

In. (mm)

OUTSIDE DIAMETER B 

In (mm)

WEIGHT

lbs (kgs)

INTERNAL WATER VOLUME *

liters

MINIMUM BATCH SIZE

(units)

2 34 (851) 11 (280) 42 (19) 30 50 **
3 42 (1067) 11 (280) 52 (24) 45 1
4 56 (1422) 11 (280) 69 (31) 60 50 **
6 72 (1818) 11 (280) 88 (40) 80 50 **
7 85 (2159) 11 (280) 103 (47) 100 1
9 103 (2616) 11 (280) 126 (57) 120 50 ** 

 

* Custom volumes available upon request

** Lead time will vary with quotation

Standard CNG cylinders delivered in 6-8 weeks. Allow up to 12 weeks for custom sizes.

SPECIFICATIONS
  • Type 3  Pressure Vessel

  • Maximum Operating Pressure: 3,600 psi (250 bar)

  • Minimum Burst Pressure: 9,000 psi (620 bar)

  • Port Opening: 1-1/8 in (28.6 mm) diameter port on each end

  • Safety: Benign leak-before-burst avoids catastrophic failure

  • Certified and manufactured to NGV 2-2007 and DOT FMUSS 304 standards

  • Liner: Seamless, impermeable 6061-T6 Aluminum 

  • Structural Shell: Carbon fiber and epoxy composite

  • Protective Barrier: Glass fiber and epoxy composite

  • Life: 20 years of service life

  • High thermal conductivity of Aluminum liner achieves a better fill capacity under fast-fill conditions

  • Corrosion Resistant: Not prone to rusting like steel