I have a freedon van mount in one of my vans, good guys, the pure water what ever they are called I would question the securing of the tanks looking at there website.
my second system was designed for me, for my needs and was a total pain in the back side, diy if you are busy is not cheap, and is time consuming to say the least, up right tanks are better than flats imo as you can use all the water, flat you cant.
I would recommend purefreedom
Hi window washers I was also concerned about safety, when mine went in a garage I asked them about how secure the tank was,
they said fine as it was secured to the chais, and there is no stronger part of the van than were they bolted it down,
so if a garage says its ok who else can you trust so im happy