Not the most complete description but I take it there is an inflow and outflow pipe pair to the tank moving the Novec to an external radiator to exhaust heat and a second inflow and outflow pair to the condenser also to an external radiator? Ah, found it. One gallon offered for sale @ $379.95.
This is off topic but the Novec fluid doesn't get pumped anywhere. This video should explain it better.
https://www.youtube.com/watch?v=a6ErbZtpL88Back on topic. Bitmain, I'm ready to purchase more S5's. With the price of BTC creeping up I think it would be worthwhile.