AMSOIL Dahl Fuel Filter/Water Separator

The AMSOIL Dahl Fuel Filter/Water Separator

Extend Equipment Life With The New
AMSOIL Dahl Fuel Filters

Filter Types:

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The AMSOIL Dahl Fuel Filter/Water Separator removes water and solid contaminants from fuel before it reaches the fuel pump and injection system.

Water and solid contaminants reduce the effectiveness of fuel's lubricative coating on high precision injection components. If this protection continues to decrease, the results can include wear, erosion, surface pitting and eventual ly loss of pressure.

Many existing fuel filters are not designed to remove significant amounts of water. They are designed to simply filter in only one step. To accomplish this, they must be porous enough to allow a sufficient volume of flow. This limits its filtering ability to between only 10 and 30 microns. Using a tighter media would plug up too quickly and the filter would need frequent element changes.

The AMSOIL Dahl system has none of these shortcomings. Its dual chamber 3-stage fuel filter/water separators provide efficient water separation and contaminant filtration. The unique patented depressurizer cone spreads the flow of the fuel. With more area to flow over, there is greater separation of water and dirt from the fuel.

The AMSOIL Dahl system has less mechanical flow resistance than other separators, because the fuel only changes direction twice. The AMSOIL Dahl system removes virtually 100 percent of the water and most of the solid contaminants in the fuel.

The AMSOIL Dahl system prolongs system life by eliminating pump and injector overhauls caused by water-contaminated fuel. It also reduces downtime spent repairing the fuel pump and injection system. The loss of income from only a few hours of downtime is greater than the cost of an AMSOIL Dahl system.

The AMSOIL Dahl system includes a reverse flow valve that holds the prime in the fuel system by not allowing flow back to the tank during shut down. It also helps eliminate air entrapment because the inlet and outlet ports are at the top of the unit. The fuel changes direction only twice, creating less flow resistance and allowing longer pump and element life.

Most solid contaminants are removed by the depressurizer cone in the bowl before reaching the filter element, which has extra media. These characteristics allow the element to last up to 40,000 miles under normal conditions.

How the AMSOIL Dahl System Works
Contaminated fuel enters the inlet port.
The fuel is directed down through the centertube.
Fuel flows through the reverse flow valve
As fuel is discharged from the depressurizer cone, 80 percent of the contaminants are separated from the fuel. Fuel rises upward and most of the solid contaminants and water settle into the bowl's quiet zone.
As the fuel rises upward, any remaining small water droplets collect on cone, baffle and bowl surfaces. The size and weight of the droplets gradually increase causing the droplets to flow downward into the sump.
Fuel is then filtered completely by the filter element. The clean fuel then continues up through the outlet port to the pump and injection system.

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