Fig. 163 represents a widely used type of suction pump, it is designed for vessels of not more than fifteen to twenty feet deep; for contractors who wish to pump large quantities of water from excavations, etc.; for irrigation or any other purpose where a compact and capacious pump is desired. The lever may be worked from three different points as shown by lugs on the illustration. The lever socket is made at such an angle that the bent wrought iron lever when put in one side up, is right for ordinary pumping and by simply changing it the other side up, it becomes a vertical lever. The valves are accessible and removable by hand from above. It is claimed that with 8-1/2-in. diameter cylinder and 6-in. stroke that the capacity is 1-47/100 gallons for each stroke, with 20 feet lift—the suction pipe being 3-in. in diameter. [Illustration: FIG. 161.] In the illustrations (Figs. 161 and 162) it will be noticed that the discharge is conveniently arranged to receive either fire hose, or iron pipe connections for other uses, as in mines and on ship-board. _Being made in large factories_, there are immense numbers in world-wide use; every detail of these pumps is carefully considered; the sizes manufactured range from 2 inches to 6 inches diameter of cylinders, with strokes 4, 4-1/2 and 5 inches. _The capacity_ of each pump is also given in the published lists by the makers; this is given under the heading “Capacity per Revolution” with the added information as to the best sizes to be used for the suction and discharge pipes. [Illustration: FIG. 162.] NOTE.—It were well for the student to know that in case of breakage or worn out parts of an otherwise serviceable apparatus that the makers _have provided for their repairs_ as will be indicated by the following taken from the catalogue of a well known manufacturer. “In the following lists will be found descriptions of pieces for all the staple pumps, which will prove of decided convenience. In this connection we desire to impress most emphatically on the minds of dealers that the threads are cut to exact and accurate gauges; all holes in flanges, etc., drilled to templets; all castings made from exact metal patterns, similar parts being always the same. Therefore, repairs will invariably take the place of the broken parts.” _Fig. 163 represents a Pitcher Spout Pump_, of large size for contractors, and Fig. 164 the parts of a common house pump. The two figures show pumps substantially the same. [Illustration: FIG. 163.] The smallest size “listed” of this pump has a cylinder diameter of 2-1/2 inches, fitted with 1-1/4 in. pipe and it has a capacity of ·09 gal. per stroke and it takes more than eleven strokes to pump a single gallon. With a cylinder 4-1/2 inches, with pipe 1-1/2 in. diam., the pump has a capacity of ·34 gal. per stroke. [Illustration: FIG. 164.]