Quattroflow Installation, Operation & Troubleshooting Guide
Rev. 0
Page 19 of 25
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7
DRAINABILITY OF QUATTROFLOW PUMPS
After draining, Quattroflow pumps may contain a non-recoverable volume of liquid which depends on the
pump size, pump type and orientation of the pump chamber.
To support maximum product recovery and drainability we give the following information:
7.1
Optimized drainability: orientation of the pump chamber
There is the possibility to rotate the pump chamber in 90° steps for all Quattroflow pump sizes. This rotation
is independent of the orientation of the pump drive which stands standardly horizontally on the ground.
The following two tables show the standard orientation of all QF pump sizes and the pump chamber
orientation for an optimized drainability.
For the small Quattroflow pump series QF150 and QF1200 we recommend a vertically mounted pump
chamber (inlet up, outlet down) for optimized drainability.
The shown standard orientation for QF4400, QF5050 and QF20K pump series is also the recommended
orientation for optimized drainability.
In case that the pump chambers should be rotated:
Please mind that the clamp ring needs to be rotated as well to access the clamping ring
screw (see installation instructions).
If the clamping ring screw is not fixed before operation the pump could be damaged.
QF150
QF1200
Standard orientation
Pump drive
horizontally (standard)
pump chamber
horizontally mounted
Optimized drainability *
Pump drive
horizontally (standard)
pump chamber
vertically mounted
Table 10 Standard and optimized orientation of QF pump chambers (QF150, QF1200).
* Please note that the fluid path (inlet and outlet valves) opens automatically, if there is small over
pressure or hydrostatic head on the inlet site of the pump chamber. Please check if an additional valve
before the inlet connection port is needed in your system.
