48(5 



THE IRRIGATION AGE. 



Are You Paying Too Much 

 to Irrigate by Pumping? 



Every irrigator knows his greatest expense is cost of water. 

 But if you are irrigating by pumping, have you reduced the cost 

 to the minimum? Saving in pumping expense counts as much 

 for profit as increasing the yield per acre. 



In any location where, mounted either horizontally or verti- 

 cally, the pump can be placed close to the water supply, the 



"American" Centrifugal Pump 



will develop higher efficiencies than any other type of pump except 

 the compound plunger pump connected to a compound condensing 

 engine with Corliss valves. But a plunger pump equipped in this 

 manner is mighty expensive to install, will require many times as 

 much expense for attendance and, owing to its complicated 

 mechanism, will require many times as many repairs. 



Figure all these expenses for a period of years and the 

 "American" Centrifugal will prove the more economical in- 

 stallation in every instance. 



All centrifugal pumps look much alike from the outside but 

 differ materially in interior construction, and it is the design of the 

 water-ways and refinement of the flow-lines that are the most 

 i mportant features of the pump. 



All the Gold Medals given to centrifugal pumps at the Alaska-Yukon- 

 Pacific Exposition at Seattle in 1909 were awarded to "American" Centrifugals 

 for the reason that the flow-lines were refined to a degree that the judges were 

 compelled to recognize their superiority. 



In the "American" Centrifugal there is no sudden change of direction of 

 water in passing through the pump just an easy forward flow in curves of 

 constantly increasing radius and the impeller is adjusted to the casing with 

 precision, preventing back-flow. 



These features give "American" Centrifugals efficiencies of 60 to 80 per 

 cent under actual working conditions and they are guaranteed to more than 

 equal the best performance of any other pump of their type. 



But it is not only in efficiencies, but cost of maintenance and repairs, that 

 "American" Centrifugals excel. The main bearings are oiled with ring oilers 

 from oil cellars and, once the pump is in operation, it requires no attention 

 except to drain off the refuse oil and refill the cellars every week or ten days. 



"American" Centrifugals are made in both horizontal and vertical types, 

 in any size, in any number of stages and equipped with any power. 



Before you buy pumping machinery for irrigation write for: "Cost of 

 Irrigation." Catalogue No. 104 for the asking. 



The American Well Works 



General Office and Works: 

 Aurora, 111., U. S. A. 



Chicago Office: 

 First National Bank Building 



