Dual Fuel: Altogether better

Luxfer Gas Cylinders is proud to be working with The Hardstaff Group’s patented OIGI® (Oil Ignition Gas Injection) combustion Dual Fuel technology that enables the same engine to burn both compressed natural gas (CNG) and diesel fuel. CNG used in the exclusive Hardstaff system is contained in Luxfer carbon composite cylinders.

Hardstaff’s OIGI technology is used to convert diesel engines to Dual Fuel engines. The key benefit of Dual Fuel over a dedicated natural gas engine is that the high thermal efficiency level of the diesel engine is retained since it is the diesel injector that ignites the gas. Hardstaff’s Dual Fuel technology is comprised of natural gas fuel containment in Luxfer composite cylinders, a gas-injection system, a Dual Fuel engine control system and additional exhaust after-treatment that regulates emissions and significantly reduces all regulated tailpipe pollutants. The result is a unique system that precisely controls natural gas and diesel injection, thus providing extremely efficient fuel use, improved fuel economy, reduced CO2 emissions and lower noise emissions—along with performance equivalent to that of the original diesel engine prior to conversion. The Hardstaff Dual Fuel system also permits 100% diesel operation in areas where natural gas is less readily available.



Hardstaff OIGI systems can be fitted to light-duty trucks and heavy-duty trucks, buses and coaches. With the price of natural gas significantly less than diesel in many countries, the pay-back period for Dual Fuel conversion can be relatively short (depending on specific vehicle applications).

Dual Fuel technology is also totally compatible with bio-methane, a renewable, sustainable energy source that can double CO2 savings, yielding 32-40% lower CO2 emissions.

Luxfer is the selected cylinder partner for The Hardstaff Group in Europe and the exclusive distributor of OIGI Dual Fuel technology in France and Italy, as well as the selected cylinder partner for The Hardstaff Group’s North American distributor, BAF Technologies, a clean energy company.


Download the Dual Fuel brochure in English or French.


Units: Metric
Part numberService pressureStandardWater volumeDiameterLengthWeightCNG capacityCNG capacityGLEDLETotal weight tank and fuelMount config.
 bar lmmmmkgkgllkg 
A1786C¹200EN12245 - TPED205415209675.850.634.454.548.8110.2Neck
A278C2¹200EN12245 - TPED3204153124121.678.853.584.875.7175.1Neck
A730C200ECE R1108440499737.220.714.122.320.151.3Neck
A730D200ECE R1108440492036.720.714.122.320.150.8Strap
A873C200ECE R110100404116242.624.716.826.523.859.4Neck
A873D200ECE R110100404108642.224.716.826.523.859.0Strap
A1086C200ECE R110125404139749.930.820.933.329.570.8Neck
A1086D200ECE R110125404132149.430.820.933.329.570.3Strap
A1315C200ECE R110151404160857.237.225.340.136.082.5Neck
A1315D200ECE R110151404153256.737.225.340.136.082.0Strap
A1522C²200ECE R110175404184766.243.129.346.641.695.5Neck
A1522D²200ECE R110175404177065.843.129.346.641.695.1Strap
A1741C200ECE R110200404205169.949.333.553.047.3103.4Neck
A1714D200ECE R110200404197569.449.333.553.047.3102.9Strap
A2143C²200ECE R110247359312493.460.741.265.558.3134.6Neck
A2143D²200ECE R110247359304893.060.741.265.558.3134.2Strap
A2173C200ECE R110250404253290.361.541.866.259.9132.1Neck
A2173D200ECE R110250404245689.861.541.866.259.9131.6Strap
A2390C²200ECE R110275404274395.067.746.073.165.1141.0Neck
A2390D²200ECE R110275404266794.667.746.073.165.1140.6Strap
A2782C200ECE R1103204043124106.678.853.584.875.7160.1Neck
A2782D200ECE R1103204043048106.178.853.584.875.7159.6Strap
A874C248ECE R1108440499737.224.716.826.523.854.0Neck
A874D248ECE R1108440492036.724.716.826.523.853.5Strap
A1045C248ECE R110100404116242.629.620.131.828.462.7Neck
A1045D248ECE R110100404108642.229.620.131.828.462.3Strap
A1303C248ECE R110125404139749.936.825.039.735.274.9Neck
A1330C248ECE R110125404132149.436.825.039.735.274.4Strap
A1575C248ECE R110151404160857.244.630.348.142.887.5Neck
A1586C248ECE R110151404153256.744.630.348.142.887.0Strap
A1823C²248ECE R110175404184766.251.635.055.649.6101.2Neck
A1823D²248ECE R110175404177065.851.635.055.649.6100.8Strap
A2085C248ECE R110200404205169.959.040.163.656.8110.0Neck
A2085D248ECE R110200404197569.459.040.163.656.8109.5Strap
A2566C²248ECE R110247359312493.472.749.478.470.0142.8Neck
A2566D²248ECE R110247359304893.072.749.478.470.0142.4Strap
A2602C²248ECE R110250404253290.373.750.079.570.8140.3Neck
A2602D²248ECE R110250404245689.873.750.079.570.8139.8Strap
A2862C²248ECE R110275404274395.081.055.087.478.0150.0Neck
A2862D²248ECE R110275404266794.681.055.087.478.0149.6Strap
A3332C248ECE R1103204043124106.694.464.1101.890.8170.7Neck
A3332D248ECE R1103204043048106.194.464.1101.890.8170.2Strap
¹ Diameter includes some dome caps
² Currently not ECE R110 approved.
Density of CNG = 0.679 kg/m³
All cylinders are dual ported with Boss Thread Connection = 1 1/8-12 UNF - 2B
Custom lengths and sizes are available.
Specifications subject to change.