SPX FLOW Johnson pump, Instruction Manual, Page: 16 / 57

14 General information
KGE/EN (1711) 6.5
2.3 Type designation
There are a large number of different KGE configurations, which are defined by the pump
type designation.
Example: KGE F 11 3 A6
2.4 Materials
2.5 Selfpriming action
KGE pumps are of the selfpriming type. The selfpriming action relies on the principle of
injection. The pump has to be filled with liquid once. When it has been switched on, the
air (or gas) is evacuated from the suction line. The aspirated air is mixed with the liquid
contained in the impeller.
Through the centrifugal force, the liquid / air mixture from the volute flows to the upper
half of the pump casing. In the generously sized pump casing the liquid can be de-
aerated. The air escapes to the discharge line. The de-aerated liquid has a higher
specific gravity than the liquid with air contained the volute. This causes the liquid to
return to the volute (with some pumps the liquid flows back through the impeller inlet),
where it is aerated and then de-aerated again in the upper part of the pump casing. The
air is evacuated from the suction line and the liquid level in this piping rises.
Pump family
KGE
Pump construction
KGE
pump with bare shaft end
KGEF pump with flanged motor
KGEL
countreclockwise rotation when viewing the shaft end
with bearing pedestal
Pump size
11
Impeller diameter [cm]
3 Suction and discharge connections [cm]
Drive specifications
A without motor, with bare shaft end
A5
with assembly parts, without motor
A6 with three phase motor
A7
with single phase motor
Part Material
Pump casing cast iron
Impeller cast iron, bronze or polypropylene
Mechanical seal cover cast iron
Pump shaft 17% chrome steel
Mechanical seal material carbon / ceramic
Elastomers
Buna for bearing bracket assembly 00,0,0+
Viton for mechanical seal with bearing bracket assemblies 1-2