======+======+=======+=========+================+======+=====+=======+======
| | | |Horse-power of | | | |
| | | Gallons |Boiler, based on| | | |
Steam |Water |Stroke,| per |30 lbs. of water|Steam | Ex- |Suction| Dis-
Cylin-|Cylin-|Inches.| Single | per H. P. | Pipe |haust| Pipe |charge
der | der | |Stroke of| per hour, | |Pipe | | Pipe
| | | Each | which the pump | | | |
| | | Piston. | will supply | | | |
| | | | with ease. | | | |
------+------+-------+---------+----------------+------+-----+-------+------
4 | 2-1/2| 4 | .084 | 165 H. P. | 1/2 | 3/4 | 2 | 1-1/2
4-1/2| 2-3/4| 6 | .154 | 300 „ | 1/2 | 3/4 | 2-1/2 | 2
5-1/2| 3-1/2| 6 | .15 | 500 „ | 1 |1-1/4| 3 | 2-1/2
| | | | | | | |
6 | 4 | 8 | .435 | 870 „ | 1 |1-1/4| 3-1/2 | 3
7 | 4 | 8 | .435 | 870 „ | 1-1/4|1-1/2| 3-1/2 | 3
7 | 4-1/2| 8 | .55 | 1,100 „ | 1-1/4|1-1/2| 4 | 3
| | | | | | | |
8 | 5 | 10 | .85 | 1,700 „ | 1-1/2| 2 | 4-1/2 | 3-1/2
8 | 5 | 12 | 1.02 | 2,000 „ | 1-1/2| 2 | 4-1/2 | 3-1/2
9 | 5-1/2| 10 | 1.03 | 2,000 „ | 1-1/2| 2 | 4-1/2 | 4
| | | | | | | |
10 | 6 | 10 | 1.225 | 2,450 „ | 2 |2-1/2| 5 | 4-1/2
10 | 6 | 12 | 1.469 | 2,900 „ | 2 |2-1/2| 5 | 4-1/2
12 | 7 | 12 | 2.00 | 4,000 „ | 2 |2-1/2| 6 | 5
------+------+-------+---------+----------------+------+-----+-------+------
The capacity for boiler feeding in the table is based upon sixty single
strokes for each pump per minute.
The suction and discharge openings, as will be seen in the figure, are
on both sides. The water piston is packed for hot and cold water and
special valves are furnished as may be necessary.