One other problem with going with the only crash tested system on the market is that...er...it's the only crash tested system on the market
I'm not sure on how generic the various water tanks are, from 250l up to 1000l how many variants are there?
Could you simply buy the cage itself from Ionics, or do you have to buy the tank as well?
Does this also mean, should you have no option but to buy the tank too, that Ionics would have to fit it themselves?
Would you then have no other option but to go with an Ionics system too?
I can certainly understand that they would have to fit the cage into your van, they would need to do so in able to ensure that it was fitted correctly to be able to conform to safety standards and so on, you could hardly make a claim against them if you had the tank fitted somewhere else could you. (Er, this is in the event of the tank coming lose and causing mayhem and you trying to say that it was the fault of the tank, and not the method of fitting)
Crash testing is always going to have a degree of controversy about it, an accident on the road is very different from the crash test, impact speeds are almost always going to be way higher than those tested for a start.
Also the angle of impact, and site of actual impact on the body of the vehicles in an accident.
I've seen the cage that one guy have had done in his van, it was fixed to the floor by a guy who was heavily involved with stock cars.
The plates that anchored it to the floor of the van were about 8 or 9 inches square, with a plate of equal size on the underside of the van floor completing the sandwich.
This compared to another stainless steel cage with anchor points a fraction of that size.
The stainless steel one was fitted by a reputable WFP manufacturer (NOT Ionics I must add!!)
The other one was DIY.
I know which one I would have put my trust in.
Except that the DIY one was only the standard, tubular cage that these 1000l IBC cages come in!!
So the stainless steel cage itself got my vote in that particular comparison
Philllip makes a good point about trailers and safety, but trailers come with their own safety issues, if you slam on the brakes with over a ton of trailer + water behind you, and you are not in a perfectly straight line you WILL have big problems controling your vehicle!
If you are taking sudden, evasive action whilst braking, again, you may well have big problems controling your vehicle, once that trailer starts to go it can go in a big way, and that will cause BIG problems to anything in it's path!
For every upside, there is a downside...
Another thing to remember; vans are by their nature, beasts of burden.
Your tank may not be crash tested, but it will probably be caged and bolted to the floor of the van.
Compare this to the builder who is carrying a ton of cement, or the landscape specialist who has a ton of slabs or boulders in the back of his van.
Or god knows how many other tradesmen have a large weight of unsecured items in there.
Perhaps a more general safety thing would be for all vans to have bulkheads, that won't stop a ton of water, cement or paving slabs mashing you to pulp of course, but it gives major protection against other unsecured items...such as a hundred weight bag of cement or a couple of paving slabs:o
Regards,
Ian