Well after finding all the bits in my van froze solid

!! so yesterday i decided to do a bit of insulating!!
Foam tubes (thick stuff from Wicks) on the pipework from the tank to pump, then pump in a removable foam cover,
Then more foam tubes to and from the di vessel, then even more to the "y" section on the pipe to the hoses and last of all a couple of nice thick duvets on the hose reels.!
back of the van now looks like a space ship,
but it didnt freeze last night!!!