High pressure CNG valve

Paul Boughton

As the prices of ‘traditional’ vehicle fuels continue to rise, so vehicle manufacturers and drivers continue to seek more cost-effective and efficient ways to propel road vehicles.

Among the fastest-growing of these is compressed natural gas (CNG), for which running costs are around 35 per cent of those of gasoline. The rapid growth in CNG vehicles – of which there are now nearly 15 million worldwide - is being accompanied by an increase in the number of CNG filling stations across the globe, which has now topped 20,000.

Traditional systems for delivering CNG into vehicles rely on a complex arrangement comprising a regulator, solenoid valve, rotary actuator and ball valve. Not only does this create significant potential for leakage through the number of components and extensive pipework required, but invariably some gas is vented into the atmosphere during the filling cycle.

Recognising this, Norgren, an international market leader in pneumatic motion and fluid control technology, has developed a high-performance valve product which reduces component count and cost, minimising potential leak paths, and eliminating waste during filling.

The single high-pressure direct acting valve is suitable for both OEM installation and retrofitting and can operate at a temperature range between -40ºC and 70ºC, making it suitable for use in most environments in the world.

It is designed to cope easily with the working pressures of up to 320 bar typically found in the applications. Installation and servicing are both significantly simplified, while its design ensures no gas is lost during the filling cycle, minimising wastage of precious resources, reducing air contamination, and saving cost compared with traditional systems.

For more information, visit www.norgren.com/uk/energy

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