Quattroflow Installation, Operation & Troubleshooting Guide
Rev. 0
Page 11 of 25
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4.5
Flow directions
Due to the internal check valves inside the pump liquid cannot flow backwards through the pump. Please
mind this if the installation needs to be emptied through the pump.
Note: The flow direction is independent from the direction of motor rotation.
4.6
Product connections
Suction and discharge connections of sizes QF150 and QF1200 are mounted
opposite at the pump chamber (“inline”). An arrow on the pump chamber shows
the flow direction (see figure), so that the suction and pressure side can be
clearly identified.
The size QF4400, QF5050 and QF20K have both ports in front of the pump
chamber and are marked with "IN" (inlet) and "OUT" (outlet).
Please see the drawings below for Quattroflow pump chamber orientation which are supplied as standard ex
works. All QF pump chambers can be rotated in 90° steps to adapt the pump to your process and application.
The orientation has no influence on the self-venting behavior.
See also chapter Drainability of Quattroflow Pumps. There you can find further information about the pump
chamber orientation for best drainability.
Standard port and pump chamber orientation from factory:
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 in the user manual).
If the clamping ring screw is not fixed before operation the pump could be damaged.
QF150
QF1200
Figure 6 Standard pump chamber orientation for Quattroflow pumps.
