Rock Island Argus. (Rock Island, Ill.) 1893-1920, 1914-12-31

the force main the pipe will be broken
or split.
With the centrifugal type OF pump
there are NO valves and no pulsating
motion of the water which would cause
water hammer. but an even flow 81
water all the time through the force
main
The contract was awarded to the
Henry r WoTthinRton company for a
100000 gallon steam turbine driven
centrifugal pumping unit, which con-
sists OF a Kerr 35O-horse power CON
densing steam turbine. which will run
at $500 revolutions per minute. con-
nected direct 10 a reduction gear or
the herring bone type. which will re-
duce the speed from $500 to 1900
revolution per minute. al which speed
the pump runs. The pumps are con
nected direct 20 this gear by means
OF q flexible coupling. and are two
pumps in series OF the double suction
yolute type. with forged steel shafts.
on which are mounted bronze impell-
ers ana wearing rings One pump
raises the water from the suction well
the next pump at pressure OF approx
imateIy 40 pounds The second pump
raises the .Sressu-e from 40 pounds
and discharges into the force main al
IS pounds. which is required TO force
the water TO the reservoir. This pump
ing unit will set about eight feet lower
than the present pump. so IS toTeduce
the suction lift and give a better eff
cheney and less trouble during the low
stages OF the river. which Is approx
imately about eight months OF the
year. and with this pump installed #
puts this station in shape TO supply .
water all the time and have a reserve /
pump when necessity requires.
New Elevated Tank.
This distribution system is separ-
ated by means OF stop valves into two
parts and fed from different sources.
That section OF the city that has APP
the same elevation as that
Of Second avenue Is supplied from the
clear water reservoir at Twenty-sec-
ond street and Sixteenth avenue. and
the balance OF the city has been sup
piled from the stand pipe on Thirtieth
street between Tenth and Eleventh
avenues. This stand pipe - &c feet
In diameter and so feet high with a
or approximately 10000 gal
ons. and was installed by the Chicago
Bridge and Iron company in 1895. Att
that time IL was OF ample size and ca
pacity to supply the section Of the
,ity that requires the high level ser
vice. as the consumption at that time
vas from 175.O0O % 100000 gallons
Der day. The consumption has now
10 from 100000 10 100000
gallons per Cay. due 10 the large num-
Ter OF extensions that have been at
ached. 50 that 10 give adequate ser
ice IL was necessary to erect a new
md larger supply. For this purpose
.onds in the sum OF S22.O 900 were voted
nd contract entered into with the
rock Island Bridge and Iron company
or a 100000 gallon elevated tank and
rected at the reservoir. This tank
cts on a steel tower 10 feet above ]
he surface. and the tank proper is 40
Get in height and so feet in diameter.
he riser pipe which supplies the tank
! six feet in diameter. and at the q
ottom has four openings. two OF ,
hitch admit 70 inch pipes. one from
he discharge OF a / 100000 gallon Ais
halmers centrifugal pump and tn
Their from the discharge OF a 100000
allon Goulds centrifugal pump. These >
ipes run I'D eight and twelve feet re.
Dectively into the six-foot riser pipe &
nd discharge at these different eleva-
ons 10 allow the pressure 70 equalize n