National Lab Industrial Recirculating Water Chillers are mainly divided into two main division. The standard range of water cooling recirculating chillers and the Low temperature of glycol/water mixture recirculating chillers. The cooling Power in these models can be in the range of 1 to 365 kW. There is a wide range of pump choices for these models. Pump pressure can be as low as 3 bar to as high as 8 bar for different applications.