- Boxer Pumps
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- Membranpumpen - Gas
- BOXER 3K Diaphragm Pump Series
3K Series
The 3K series is an extremely compact, robust and versatile single headed gas diaphragm pump. Highest quality con-rod and motor bearings ensure lowest power consumption and, combined with slow speed, maximum operational life.
This series is offered with a quality brushed and versatile brushless motor.
› Flow rate to 8.5 l/min
› Robust / long life
› Dual and Quad versions available.
Double and Quad versions are available in the 3KD and 3KQ series as well as liquid versions with the 3K, 3MD and 3MQ series.
Flow control is available in combination with PWM Flow Controller.
Return to Miniature Diaphragm Pumps for Air and Gas range.
Quality brushed motor available in 12 and 24 V.
Technical Data
| Free Flow | 8.5 l/min |
| Max Pressure | 2.0 bar |
| Max Vacuum | -740 mbar |
| Voltage Options | 12 / 24 V DC |
| Power Consumption | 4.5 to 10.0 W |
| Max Ambient Operating Temperature | 50 °C |
| Max Media Temperature | 100 °C |
| Elastomers Options | EPDM / Nitrile |
| Other Wetted Parts | PPS (polyphenylene sulphide) |
| Weight | 385 g |
All data is representative for initial selection purposes. It is the responsibility of the user to determine suitability for the intended use.
Brushless DC motor in 24 V DC with integrated driver.
Long life combined with elegant speed (flow) control via a 0 to 5V DC input, rpm feedback
output and a 5 V DC output is for convenient speed control via external potentiometer.
Technical Data
| Free Flow | 7.0 l/min |
| Max Pressure | 2.0 bar |
| Max Vacuum | -700 mbar |
| Voltage Options | 24 V DC |
| Power Consumption | 4.5 to 10.0 W |
| Motor Inputs / Outputs (further details in Motor Information below) | |
| Speed Input | 0 to 5 V (0 to 4000 rpm) |
| Frequency Output | 1 pulse per revolution |
| Voltage Reference Output | 5 V DC (for speed control via external potentiometer) |
| Lead Length | 40 cm (exit position not defined) |
| Max Ambient Operating Temperature | 50 °C |
| Max Media Temperature | 100 °C |
| Elastomers Options | EPDM / Nitrile |
| Other Wetted Parts | PPS (polyphenylene sulphide) |
| Weight | 385 g |
Motor Information
This motor is supplied with 5 wires:
Red + 24 V DC Supply
Black GND
Green 0 to 5V DC (or PWM, min. 15kHz signal) Speed Control
White +5 V DC Output for use with 10 kΩ potentiometer and GND wire
Yellow Frequency Ouput, 1 pulse per revolution with 50% on-time
Speed control is availabe with 3 options (see diagram on right).
The white wire (5V DC Output) is supplied with the lead end insulated. Damage will occur to the driver electronics if this wire is connected to +24 V or GND.
All data is representative for initial selection purposes. It is the responsibility of the user to determine suitability for the intended use.