The San Francisco call., 1909-09-26

CITY MADE PUMPS
ARE SOLD IN EAST
Local Mandatory Turning Out
Centrifugal Type 0utbids
More Favored Rivals
Gigantic Machines With Per
Minute Capacity 10000
Gallons in Demand

llC nut very generally appreciated py
engineers. is the fact that San Fran
cisco makes the most efficient centri-
fugal pumps in this country and that
they are being installed in practically
every quarter of the ssfobe where great
water pressure is necessary. Besides
the usual needs to which centrifugal
pumps are applied a new use has been
discovered for them whereby hundreds
OF acres OF land formerly rendered
worthless by overflow of streams have
been reclaimed for agricultural pur-
poses. The Krogh manufacturing COM
psny OF this city has witnessed the
growth of the pump business from
mere experiment 10 a gigantic sue
cess for the impelling Of great forces
of water by means OF highly perfected
machines the heaviest Of which. while
weighing 10000 pounds. are yet as
tielicately adjusted a clock.
GROWTH OF INDUSTRY
Krogh himself. in charge Of the bust
ness. has been making pumps in San
Francisco for nearly so years, 80 of
which have been spent in business for
himself He recalls the day when
water could not be pumped in great
volumes 10 a height Of more than %
or 50 feet where now il is easily raised
.0o0 feet. In the early days the high
cst safe pressure was only Is pounds.
where nJw il runs from soc pounds up
10 practically any amount. krogh con-
trolls many patents as the result of his
years OF careful labor and study.
Another practical demonstration of
the value Of centrifugal pumps is shown
by krogh IN the case OF the City OF Tu-
lare, whore by the installation OF centri-
fugal pumps capable Of dlscharg1ng
against I25 pounds pressure, together
with other suggested improvements,
material reduction IN insurance rates
was secured.
The picture shown herewith illus
trates one Of the 2-32 inch heavy duty
special krogh pumps installed for the
Tres PsIacios rice and irrigation COM
pany OF Houston. Tex. 1t has a ca
pacity OF 10000 gallons of water per
minute against a head or a height of
80 feet TO carry the impellfng force OF
that enormous volume OF water. The
pump as ii stood on the truck weighed
50 .0e0 pounds or Is tons II was L
feet high and took eight horses TO haul
IL 10 the freight station. The one pump
made good load for one freight car
in fact. the maximum limit that the car
Sss allowed TO carry.
ooth OF the above named pumps were
directly connected to vertical triple ex-
cansion Wilkins steam engines operat-
ing with surface condensers. Two addi-
tional 26 inch heavy duty pumps were
also supplied TO the same company.
The pumps are used for rice irrigation.
oUTCLASSES EASTERN MAKES
r This order was all the more remark
able from the fact that freight rates
70 Houston from san Francisco were
considerably higher than from COM
peritive eastern points. Yet the local
1rm secured the contract. Thus it ap-
pears that San Francisco is destined TO
be the home and economic market for
the centrifugal pump industry. The
success Of the krogh pumps over those
Of eastern make has been largely due
10 their doing away with the alter
mating currents and eddies that We're
the principal drawbacks TO the per-
fecting Of this type of mocha nism.
II is pointed out in favor of the cen
TrffuEal type over the reciprocal
pumps in mines where electric current
is available. that there are no valves.
springs. guards or crank pins TO get
out Of order. but IT is simply a series
OF scientifically constructed impeIlers
mounted on a single shaft revolving
IN one direction and with no rubbing
surface. and hence noiseless.
RECLAIMs LowLANDs
This company has recently installed
- complete reclamation pumping
plants for the Rindge land and water
company. the Empire construction com
panv and for L A Phillips. designed
70 draw of the overflow water of the
san Joaquin river from the bottom
lands and rendering what has hereto
fore been worthless acreage into prop
erty that is selling for $3.50 and $500
an acre Eleven Of these plants con-
sist Of sc inch pumps each having
a capacity OF $4,000 gallons per min
ute. operated by a 200 horsepower cleo |
tric motor The discharge pipe lines
are "a inches in diameter. A special
electrically driven vacuum pump is /
used for priming purposes.
The Rindge land company of Stock |
ton IS using five of the large reclama-
tion pumps. each with a capacity ex- /
ceeding $4,000 gallons per minute. The
Holland company has three large /
pumps having combined capacity of l
10000 gallons a minute. The Ameri- /
can beet sugar company has is OF 4
these heavy duty pumps and the STAN /
dard oil company has more than forty 1
pumps Of various types. In fact. the 1
Krogh manufacturing company num-
bers among its customers nearly every
large sugar factory, brewery. winery, /
power company and land colony on the /
coast. While the first cost of these /
pumps is somewhat higher than east /
ern built pumps, IL is asserted that /
the machinery is considerably heavier 4
and stronger. with the result that /
rBA-AF u NAttEE pulApS nave DtCn III !
operation for u years without over /
hauling. At the same time vast 1
saving in electric current is claimed /
for these machines.
DRAWS WATER FROM BAY
The Krogh company is now installing |
q special high duty pump for the City |
electric company of San Francisco. This /
pump is 10 be used TO deliver con- |
densing water to surface condensers of /
a $4,000 kilowatt steam turbine set /
taking the water from the bay and
elevating IL 36 feet through the con- |
denSers. with capacity OF $4,000 gal |
Ions per minute. The impeIler IS made |
of bronze; the shaft is of hammered |
steel eight inches in diameter and is |
covered with bronze protecting sleeves. |
Bearings are of the ring oiler type and
are protected from the salt water
handled by the pump. Stuffing boxes |
entirely seal the pump against the
entrance of air. The pump is directly
connected to a go horsepower steam
engine by means of a flexible coupling
40 inches in diameter and weighing
200 pounds.
The krogh company does not con-
fine itself 10 low head pumps only
II also turns out high class line ~