200AV
In order to meet specialized pumping problems,
this variable volume pump requires less HP by
maintaining a minimum pressure, adjusts its displacement
to the discharge rate allowed and reduces the
breakdown of materials being pumped in a recirculating
system. In "Filling" applications, this
pump is superior being that during "Deadheading"
the pumping members go into neutral and idle delivering
nothing but holding the operating pressure on
the discharge line thus absorbing a fraction of
the HP required during operation. The energy savings,
depending on the operation can be significant.
This device provides a means of meeting highly
specialized pumping capabilities, including: proportioning
of liquids in the process industries. Control
of liquid flow to dehydrators, heaters, etc. Eliminating
variable speed motors. For use in connection with
automatic level controls and numerous other purposes.
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200AX
When this pump is "Fitted" in all iron
construction and equipped with high temperature
spring the necessity for a costly and usually
hard to find external relief valve to perform
at elevated temperatures is negated. It is completely
handled within the pump. The pump can be supplied
with oversized "Jackets" at both ends
to assure that the pumpage remains at temperature.
Corn syrups, molasses, starches, soaps and greases
do not do justice to the full spectrum of this
pump's uses. For additional
details see description under Model 20DX.
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200A
A distinguished record of service for transfer
work and the general applications of industrial
use have been enjoyed over the past 75 years.
Its large bronze shaft bearings and oversized
glands have aided in its success. The pump
consists of a housing (Body), rotor, piston,
shuttle block and cover (Solid Head). The rotor
is concentric with the shaft, and is a liquid-tight
fit in the housing. The rotor has a square
slot across its face which forms a double-end
square cylinder. A corresponding double-end
square piston operating in this slot, and the
piston, which is in the form of a channel,
receives the shuttle block. The shuttle has
a hole in the center forming a bearing operating
on an offset pin, mounted in the cover. When
its rotor revolves the offset relation of the
pin to the rotor shaft imparts a reciprocating
motion to both the piston and the shuttle block.
This gives the pump a rotary piston displacement
action. This sliding piston pumping motion
results in a minimum wear condition in the
handling of dry liquids, such as aviation gasoline,
naphtha or solvents.
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