Manual 1808 Rev B p/n 001808 0000
6
GENERAL
The visual difference between the two pumps is
in the oil separators. Internally, the pistons, cams,
and slide pins of the KD-50 are treated to be able
to tolerate the increased speed. Both pumps are
air-cooled rotary piston type, consisting of two
rotary pistons pumping in parallel. The pumps
attain a low ultimate pressure of less than 10
microns (1 x 10 in. Torr McLeod gauge). The
rugged, simple design ensures dependable service
under the most severe applications without costly
or complicated maintenance. The ruggedness
of the pump is evidenced by all cast-iron rotary
internals, including the cast-iron sleeve bearings.
The external drive shaft bearing is a sealed
grease packed bearing. The mechanical shaft seal
contains viton elastomer, which is suitable for most
chemical as well as high-temperature operations.
PUMP COMPONENTS
All components are easily serviced and no special
tools are required. The reliable, leak-free shaft seal
requires no adjustment or maintenance. The gas
ballast valve regulates the vapor handling capacity
of the pump, decelerates contamination buildup
in the oil, and quiets the discharge valve noise
of the pump. The oil separator of the KD pump is
equipped with a mist eliminator to provide ltering
of the exhaust, thereby resulting in a cleaner pump
area. The pump specications are shown in Table
4-1 and Table 4-2 on page 7.
DESCRIPTION
04
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