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- BOXER 3MQ Liquid Diaphragm Pump Series
3MQ Series
The 3MQ series is the new compact version of the quad headed 3K pump. Highest quality con-rod and motor bearings ensure lowest power consumption and, combined with slow speed, maximum operational life. This series additionally offers a unique detachable motor construction allowing contaminated heads to be economically exchanged.
The 3MQ series is offered with a quality brushed motor.
› Flow rate to 3.4 l/min
› Robust / long life
› Detachable motor
› Singe (3K) and Dual (3MD) versions are also available
Gas versions of this series are available as 3K, 3KD and 3KQ.
Flow control is available in combination with PWM Flow Controller.
Fixing brackets are included as standard.
Return to Miniature Diaphragm Pumps for Liquid range.
Technical Data
Free Flow | 3.4 l/min |
Max Pressure | 2.0 bar |
Max Vacuum | -500 mbar |
Free Flow (gas / dry) | 6.5 l/min |
Max suction Height (dry) | 3 m H2O |
Voltage Options | 12 / 24 V DC |
Power Consumption: | 7.0 to 11.0 W |
Max Ambient Operating Temperature | 50 °C |
Max Media Temperature | 100 °C |
Elastomers Options | EPDM / Nitrile |
Other Wetted Parts | PPS (polyphenylene sulphide) |
Weight | 545g |
The above data is for parallel head connection. Series connection should only be used if higher dry suction height is required. |
Technical Data
Free Flow | 3.3 l/min |
Max Pressure | 2.0 bar |
Max Vacuum | -70% |
Max Suction Height (dry) | 2.5 m H2O |
Voltage | 24 V DC |
Power Consumption | 6.0 to 16.5 W |
Speed Input | 0.5* to 4.5 V (155* to 1400 rpm) |
*not recommended to run below 400 rpm (1.3 V) | |
Frequency (RPM) Output | 1 pulse per revolution |
Lead Length | 40 cm |
Max Ambient Operating Temperature | 50 °C |
Max Media Temperature | 100 °C |
Elastomers Options | EPDM / FKM/ Nitrile / Silicone |
Other Wetted Parts | PPS (polyphenylene sulphide) |
Weight | 385 g |

Motor Information
This motor is supplied with 4 wires:
Red + 24 V DC supply
Black GND
Green* 0.5 to 4.5 V DC (or 5.0V PWM, min. 15kHz signal) speed control
Not recommended to run below 1.3 V / 400 RPM
Yellow Frequency (RPM) Output, 1 pulse (5.0 V) per revolution with 50% on-time
* Green wire can be connected to +24 V supply (red wire) for full speed
