S&A Genuine CW-5202 Series Industrial Water Chiller with Dual Inlet & OutletS&A CW 5202 industrial water chiller is the best fit to cool CO2 laser machines. The 1. 85 gallon (7L) water tank runs at 3. 4 gpm to remove heat from the CO2 laser tube. With cooling capacity up to 5699Btu per hour and temperature error within 0. 5C, CW 5200 can easily cool down up to 150W CO2 laser tube. The water chiller has two sets of inlet and outlet ports, it can cool two laser engraving machines or other equipment at the same time. This water