Operator’s Manual 1808 022016 ENG
6
GENERAL
The vi sual difference between the two pumps is
in the oil separators. Internally, the pistons, cams,
and slide pins of the K D-5 0 are treated to be able
to tolerate the increased speed. B oth 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 servi ce
under the most seve re applications without costly
or complicated maintenance. The ruggedness
of the pump is evi denced 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 vi ton elastomer, which is suitable for most
chemical as well as high-temperature operations.
PUMP COMPONENTS
All components are easily servi ced and no special
tools are required. The reliable, leak-free shaft seal
requires no adjustment or maintenance. The gas
ballast va lve regulates the va por handling capacity
of the pump, decelerates contamination buildup
in the oil, and quiets the discharge va lve noise
of the pump. The oil separator of the K D pump is
equipped with a mist eliminator to provide fi ltering
of the exhaust, thereby resulting in a cleaner pump
area. The pump specifi cations are shown in Table
4-1 and Table 4-2 on page 7.
DESCRIPTION
04
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