CNG Cylinders

Features

Superior Storage

Most complete fast-fill and negligible permeation

High Lifecycle

Fill and empty repeatedly with no concern of liner collapse

Safe

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

Steelhead Composites offers Type III (metallic) cylinders to customers with varying needs, depending on the number of expected cycles, frequency of refilling, length of storage interval, and other individual requirements. Their robust construction utilizing seamless aluminum liners, epoxy-impregnated composite materials, and proprietary large-mouth openings ensures superior impact resistance and thoroughly reliable performance. Additionally, our cylinders provide maximum fill capacity under fast-fill conditions.

Developed to meet or exceed the requirements for shuttle busses, refuse trucks, fleet vehicles, commuter vehicles, luggage handlers, vehicles with under-chassis integration, and customized enclosed-space applications, these compact and lightweight cylinders provide exceptional performance.

CNG Cylinders PDF Brochure

Specifications for CNG Cylinder Pressure Vessel

Type III (metallic liner) Pressure Vessel
Maximum Operating Pressure: 250 bar (3,600 psi)
Minimum Burst Pressure: 620 bar (9,000 psi)
Port Opening: 28.6 mm (1⅛ in) diameter port on each end
Safety: Benign leak-before-burst avoids catastrophic failure
Certified and manufactured to NGV 2-2007 and DOT FMVSS 304 standards
Liner: Seamless, impermeable 6061-T6 Aluminum
Structural Shell: Carbon fiber and epoxy composite
Protective Barrier: Glass fiber and epoxy composite
Life: 15-20 years of service life depending upon certification and specification
High thermal conductivity of Aluminum liner achieves a better fill capacity under fast-fill conditions
Corrosion Resistant: Not prone to rusting like steel
Compatible with Renewable Natural Gas (RNG) applications

Compressed Natural Gas Cylinders, 250 BAR (3,600 PSI)

Steelhead Composites lightweight 280 mm (11 in) diameter 250 bar (3,600 psi) CNG cylinders ranging in water volume of 30 to 140 Liters. Available in Type III (metallic liner), these CNG cylinders are fully overwrapped composite pressure vessels (COPVs) with a 28.6 mm (1⅛ in) diameter port opening on each end.

One port of the Compressed Natural Gas (CNG) cylinder is fitted with a solenoid valve that integrates a thermally activated pressure relief device. Because of their robust construction, Steelhead Composites CNG cylinders can be counted on to be safe, gas-tight, robust, and tough against impact and abuse. Custom volumes are available upon request.

INTERNAL WATER VOLUME LITERS	EQUIVALENT GGE	DIMENSION A mm (in)	DIMENSION B mm (in)	WEIGHT kg (lb)
30	2	864 (34)	280 (11)	19 (42)
45	3	1067 (42)	280 (11)	24 (52)
60	4	1422 (56)	280 (11)	31 (69)
80	6	1829 (72)	280 (11)	40 (88)
100	7	2159 (85)	280 (11)	47 (103)
120	9	2616 (103)	280 (11)	57 (126)

Standard Configuration Options

Internal Water Volume Liters	Equivalent GGE	Standard Part Number	Operating Pressure Bar (PSI)	Dimension A OAL mm (in)	Dimension B OD mm (in)	Valve Type	Weight kg (lb)
45	3	AC36CR45LAS	250 (3600)	1067 (42)	280 (11)	OMB Lyra CV CNG Valve and PRD	24 (52)
100	7	AC36CR100LAS	250 (3600)	2159 (85)	280 (11)	OMB Lyra CV CNG Valve and PRD	47 (103)

Nominal Volume Liters	Equivalent GGE	Standard Part Number	Operating Pressure Bar (PSI)	Dimension A OAL mm (in)	Dimension B OD mm (in)	Valve Type	Weight kg (lb)
30	2	AC36CR030LAS	250 (3600)	851 (34)	280 (11)	OMB Lyra CV CNG Valve and PRD	19 (42)
60	4	AC36CR060LAS	250 (3600)	1422 (56)	280 (11)	OMB Lyra CV CNG Valve and PRD	31 (69)
80	6	AC36CR080LAS	250 (3600)	1818 (72)	280 (11)	OMB Lyra CV CNG Valve and PRD	40 (88)
120	9	AC36CR120LAS	250 (3600)	2616 (103)	280 (11)	OMB Lyra CV CNG Valve and PRD	57 (126)

Certifications: IAW FMVSS 304 and NGV 2:2007
Ports: Additional port options may be available and subject to additional cost. Please inquire if your needs are different from the standard configuration
Pressure Rating: Custom pressures may be available and subject to additional cost.