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- BOXER 3K Liquid Diaphragm Pump Series
3K Series
The 3K series is a robust and versatile single headed liquid diaphragm pump. Highest quality con-rod and motor bearings ensure lowest power consumption and, combined with slow speed, maximum operational life.
The 3K series is offered with 2 different motors: brushed DC and brushless DC (BLDC).
› Flow rate to 1.5 l/min
› Robust / long life
› Slow running
› BLDC with speed control input and frequency (RPM) output
› Dual and Quad versions available
Double and Quad versions are available in the 3MD and 3MQ series as well as gas versions with 3K, 3KD and 3KQ.
A fixing bracket is included as standard.
Return to Miniature Diaphragm Pumps for Liquid range.
Brushed motor available in 12 and 24 V.
Technical Data
| Free Flow | 1.5 l/min |
| Max Pressure | 2.0 bar |
| Max Vacuum | -800 mbar |
| Free Flow (gas / dry) | 1.9 l/m |
| Max suction Height (dry) | 4 m H2O |
| Voltage Options | 12 / 24 V DC |
| Power Consumption | 3.3 to 14.0 W |
| Max Ambient Operating Temperature | 50 °C |
| Max Media Temperature | 100 °C |
| Elastomers Options | EPDM, Silicon |
| Other Wetted Parts | PPS (polyphenylene sulphide) |
| Weight | 385g |
Brushless (BLDC) motor available in 24 V.
Technical Data
| Free Flow | 1.5 l/min |
| Max Pressure | 2.0 bar |
| Max Vacuum | -60% |
| Max Suction Height (dry) | 5 m H2O |
| Voltage | 24 V DC |
| Power Consumption | 4.0 to 11.0 W |
| Speed Input | 0.5* to 4.5 V (167* to 1500 rpm) |
| *not recommended to run below 400 rpm (1.2 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 1.2 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
All data is representative for initial selection purposes. It is the responsibility of the user to determine suitability for the intended use.