SHIPBOARD DAMAGE CONTROL, PERSONNEL PROTECTION, FIREFIGHTING AND CBR-D
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Damage Control Equipment
 
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DESCRIPTION: In eductors, the velocity of the high pressure water jet creates a vacuum which sucks additional water from the flooded compartment into the eductor combining chamber, where the high pressure stream picks it up and carries it along through the discharge hose. The total amount of water discharged is the entire capacity of the P-100 pump. All the water from the pump plus the water picked up from the compartment through the vacuum produced passes through the eductor. While it may appear that something is obtained for nothing, the action actually represents a conversion process in which a high pressure stream of a certain volume contains sufficient energy to move a water stream of larger volume against a lower pressure. This action, when compared to direct pumping, results in increased dewatering capacities at static discharge heads up to 55'. USE: Used in dewatering operations to remove water from a flooded space. Used with 2-1/2 inch fire hose for supply and 4 inch fire hose for discharge for dewatering compartments in superstructure or spaces forward and aft of main/auxiliary engineering spaces not covered by the main and secondary drainage system. Valuable for pumping out compartments with fuels since eductor operation involves no fire/explosive hazard. Also used to remove water from compartments where the suction lift of a pump is exceeded. Used in connection with a P-100 pump if the suction lift is over 20'. USE TIP: The eductor is attached to the lower end of the suction hose instead of the regular foot valve assembly. A built-in foot valve and strainer are part of the eductor. The 2-1/2" pressure hose from the three-way gate valve (which is attached to the discharge opening of the impeller housing) is connected to the pressure connection of the eductor. The eductor must be fully submerged; otherwise severe damage could occur to the P- 100 pump. The discharge from the pump unit through the eductor raises the water part of the distance to the pump, while the suction of the pump itself raises it the rest of the way. Thus, lifts of more than 20' may be accomplished. The pump must always be primed manually whenever the eductor is used. Capacity: 265 GPM. To prime the pump manually: a. Loosen the wing nut securing the manual priming lever and lift the lever. b. Fill the impeller housing and suction hose with water through the bowl. c. Close and lock the priming lever with the wing nut. d. Start the pump. REF: Dewatering Equipment Kit. 9-½" 26-5/8" 4-½" 2-½" 3

 
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