The chiller re-circulates the cooling water that is used by the intensifier's heat exchanger to cool the hydraulics. It cools the water and then sends it through the pump again. A chiller is most effective in areas where there is a water shortage, in warmer climates, or if the cost of water is higher. You could go through up to 3 gal/minute of cooling water on a 50 hp pump, or up to 10 gpm on a 150 HP pump, so it may be a good option. This will only reuse the cooling water; you will still be putting approximately 1 gal/min of fresh water through the cutting head per 50 HP, which will not be reused with the chiller.