General Technical Information; Pump Standard Parts; Operating Principle - Johnson Pump TG GS2-25 Instruction Manual

3.0 General technical information

3.1

Pump standard parts

Idler pin
Pump cover
3.2

Operating principle

Reversing the shaft rotation will reverse the flow through the pump as well.
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Top cover
Idler gear
As the rotor and idler gear unmesh, an underpressure
is created and the liquid enters the new created cavities.
Liquid is transported in sealed pockets to the discharge side.
The walls of the pump casing and the crescent are creating
a seal and separate suction from discharge side.
The rotor and idler gear mesh and liquid are being pushed
into the discharge line.
Intermediate casing
Rotor
Pump casing
A.0500.501 – IM-TGGS/05.01 EN (03/2013)
Pump shaft
Bearing bracket