Mar 27, 2020 - 09:18 AM
For circulating our Dielectric Coolants through a cooling system, we recommend the use of an appropriately sized centrifugal pump with Viton® seals (also called FKM). The pump and motor should be sized so that the desired flow rate and head is well within the efficiency curve of the pump/motor combination. Explosion-proof equipment is not required.
One problem that you may experience is that you want to get the slowest rotation speed possible with the largest impeller. This reduces the chance of cavitation within the pump and introduces the least number of bubbles into the mix. All of the pump manufacturers offer a pump sizing software or will size the pump for you given the Dielectric Coolant characteristics that you'll be using. All of the required fluid information is available right on our product technical datasheets for each Dielectric Coolant..
Another vendor we use for large pumps is Bell and Gosset:
They have a pump sizing tool (called ESP Systemsyzer)
You can use almost any centrifugal or gear pump with Viton (FKM) seals for your system. If you are going to use a pump made out of a resin or plastic material just make sure to check the Material Compatibility Guide for the materials its made from to ensure its compatible with our Dielectric Coolants. Be sure to check out the materials used for the seals, impeller, and the pump chamber itself as most pumps will use a mix of materials in construction. Our coolants also provide excellent lubrication for steel, carbon fiber and ceramic bearings.
Many smaller 12v and 24v pumps used for Biodiesel, diesel, and fuel oil also work well with our Dielectric Coolants.
When using any pump sizing tool, make sure to pay close attention to fluid characteristics that the tool is set for as most use water as the base fluid. You can use water to get a close approximation, however, our Coolants have a higher viscosity which can result in the pump operating above its optimal efficiency range. So we recommend derating the pump by about 20% if all you can get is water curves for a pump. (100gpm = 80gpm).