Heat exchangers and solenoid valves

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These are the essential parts required when building a twin-tank system.

The vehicle is started on mineral Diesel, and then the valves switch over to a veg tank when the engine is hot - the heat exchanger is used to heat the veg before it reaches the engine, using engine coolant.

Before stopping the engine at the end of a journey, the system must be "flushed" with mineral Diesel, making it safe to re-start from cold.

• Click pictures to enlarge
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  This is a classic flat plate heat exchanger usually salvaged from an old combi boiler.

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  They come in various sizes determined by the amount of plates (the more the better)

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  Easily plumbed into your car heater system using existing tails or by fitting 1/2 inch or 3/4 inch hosebarbs respectivly.These are readily available from oilbits in sizes to match your heater hoses ID.

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  12 volt valves.

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  12 volt valves.

Rotary-Motion 21:50, 5 December 2010 (UTC)