It’s a bit difficult to understand what you mean, but I think you are asking if there’s an RO system that can provide pure water for 2 poles directly.
(i e not going into a tank, but just feeding the poles directly)
If so, the only one I know of is Ionic’s Quattro system. You’ll need both water and a power supply though.
I’ve seen them in action, a superb piece of kit, perfect for large commercial jobs where you don’t want to be restricted by the size of your tank. They have an integral high-pressure, mains-powered pump, so it doesn’t matter if the supply tap doesn’t have very good pressure, they’ll still produce a strong supply of pure water, more than enough to feed 2 poles.
http://www.ionicsystems.com/uk/product/quattro-portable-system/Just noticed they have a new system now that’s also capable of feeding 2 poles from on-site water (and power), the Trion:
http://www.ionicsystems.com/uk/product/trion/Neither of these are cheap though, you’re looking at about £2k