Sumitomo QT Series - Explanation of Model Number - QX Pump

HMP-0567E Rev.7 (8/19)
1-2) Explanation of model number – QX Pump
a) QX Single pump
QX 3 3 - 16 -
b) QX Double pump
QX 42 22 -20-8 -
2) Pump installation
a) Check that the direction of motor rotation matches the direction of pump rotation.
b) Be sure to install the pump on a mounting base of high rigidity.
3) Pump and motor shafts alignment
a) Be sure to use a chain coupling or other flexible coupling to connect the pump shaft with the
motor shaft.
：The pump cannot be driven by a horizontal pulling force using pulleys or gears.
Ensure that no force is applied perpendicularly to the pump shaft.
Basic model
QX: QX pump
Pump size
2 to 6
Pressure indication
1: Low-pressure
2: Middle-pressure
3: High-pressure
H: High-pressure “H” series
Nominal Displacement
Direction of rotation (looking at the shaft end)
No code：CW (Standard)
L ：CCW
Seal Option
Refer to Table-3.1.1
Special specification No.
No code: Standard
-S**** : Special
Pump1 model number
Pump2 model number
Seal Option
Refer to Table-3.1.1
Special specification No.
No code: Standard
-S**** : Special
Refer to external dimensions drawing
for locations of suction and delivery ports.