When it comes to design all anti-siphon devices are not created equal. Diesel Guard comes complete with a patented and innovative system that allows for a top grid that stops the siphoning off of even the top most litres in a tank. The casual fuel thief will siphon off as much fuel as will fit in his container of choice, but given the weight and bulk of fuel, this would not normally be more than about 10l. This amount would not show in your management statistics, so is very hard to manage in that you may not even be aware that it’s happening. This small loss, happening on a regular basis will soon add up to a very real loss! Avoid this nasty situation by fitting a “top grid” Diesel Guard wherever there is the space to accommodate it.