Just took delivery of a Dufour. According to new EU environmental regulations, there is an anti-overflow valve on the fuel vent line. So when you fill the tank a little too full and the fuel expands because of warmer temperature, rather than dripping overboard via the vent line (a bad thing), it finds the least hermetic point downstream and forces fuel into the bilges through a poorly sealed access port or a poorly fitted fuel hose (a worse thing). If enough leaks, it will wind up overboard anyway, via the bilge pump.
We always try to avoid overfilling but it happens sometimes in spite of the best intentions.
Short of removing the anti-overflow valve, are there any other suggestions for avoiding diesel to leak below, or worse, to explode the fuel tank if it expands enough?
We always try to avoid overfilling but it happens sometimes in spite of the best intentions.
Short of removing the anti-overflow valve, are there any other suggestions for avoiding diesel to leak below, or worse, to explode the fuel tank if it expands enough?