TUBE AS 7W4948 - Caterpillar

filtration is a large filtration unit that is used with external fuel storage tanks such as those used to fuel work sites. Bulk filtration is designed to remove contamination and water from large volumes of fuel in one pass. Bulk filter units are placed in the fuel supply line between fuel storage tank and fueling station. Proper storage tank settling and draining practices remove portions of dirt and water in the fuel. Bulk filtration removes the rest of the dirt and water and ensures that the fuel reaches the fueling station at the proper cleanliness level.Bulk filtration units are typically made of two units. The units are connected with proper shutoff valves and pressure gauges that allow proper maintenance and ensure that the fuel is passing through free of water. The two units are:Particulate Filter - A large capacity Ultra High Efficiency filter unit that removes dirt from the fuel.Coalescer Unit - A Coalescer unit that removes water from the clean fuel. Typically the coalescer unit is made of multiple coalescing filter elements that can remove the water efficiently and quickly from the clean fuel. The separated water can be drained as needed.Bulk filter units can be custom engineered to meet the needs of the customer fueling site.Caterpillar offers specially designed bulk filtration units in four different capacities:
50 Gallons per Minute
100 Gallons per Minute
200 Gallons per Minute
300 Gallons per MinuteEach Cat bulk filtration unit is mounted on a skid, self contained, requires no electric power, and has the following features:
4 micron absolute particular filter
150 psi maximum pressure capability
Filter delta pressure indicator
Water coalescer with the capability to remove 3% continuous water in fuel. The fuel passing through the coalescer contains less than 100 ppm water by volume.
Automatic slug control valve to shut off supply if large quantities of water in the fuel exceed the automatic drain capacity, or if the particulate filters start to plug. This valve ensures that debris and water are not allowed to pass into the machine.Note: The cost of bulk filter units is significant up front, but bulk units are more economical, less labor intensive and more reliable than installing and maintaining additional filtration units on each machine in a fleet. The filter coalescer unit ensures that only clean fuel enters the fuel tank of the machine or engine. If bulk filtration is used, the standard filtration on the machine is adequate to provide fuel filtration.