What Kinds of Filtration to Choose?

With the questionaire in hand, we can begin to determine a solution. The following passage helps to illustrate the application of these varied solutions. This passage is intended as a guide only and is not absolute. Experience plays a big part in selecting a proper filtration system. It is important when the situation is complicated to consult an experienced filtration expert. The recommendations should be both effective for the desired filtration and cost effective. Ultimately, secondary filtration is an investment and must provide sufficient return on the investment.

Magnets - Simple to operate and Maintain

Pros:

• Attract and hold ferrous contamination from all types of fluid

Cons:

• Will not remove any other type of contamination

Coalescing Systems - Simple to operate andmaintain. Not always reliable. Temperature,flow rate and oil type affect coalescing efficiency

Pros:

• Gear oils

• Lube Oils

• Turbine Oils with Type I Base Oils or that have water release additive packages

• Diesel Fuel / Fuel Oils

Cons:

• Hydraulic Oils

• Most modern Turbine Oils, especially most made with Type II Base Oils

• Oil that does not release water well

Vacuum Dehydration - Can be complicated to operate and does require special training. Usually easy to maintain. Is very effective for water removal. Is capable of removing dissolved water down below 5 ppm. These systems are always couples with Media Based Filtration.

Pros:

• Gear oils

• Lube Oils

• Turbine Oils - Vacuum Dehydration will remove water safely regardless of the Base Oil Type

Cons:

• High Viscosity Oils (ISO 680)

• When water contamination is NO an issue