- Boxer Pumps
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- Membranpumpen - Gas
- BOXER 3KD Diaphragm Pump Series
3KD Series
The 3KD series is an extremely compact, robust and versatile double 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 additionally offers a unique detachable motor construction allowing contaminated heads to be ecconomically exchanged.
This series is offered with a quality brushed and versatile brushless motor.
› Flow rate to 18.0 l/min
› Robust / long life
› Single and Quad versions available.
Single and Quad versions are available in the 3K and 3KQ series as well as liquid version with the 3K, 3MD and 3MQ series.
Fixing brackets are included as standard.
Flow control is available in combination with PWM Flow Controller.
Return to Miniature Diaphragm Pumps for Air and Gas range.
Brushed motor available in 12 and 24 V
Technical Data
| Parallel Connection: | |
| Free Flow | 18.0 l/min |
| Max Pressure | 2.0 bar |
| Max Vacuum | -800 mbar |
| Power Consumption | 8.5 to 22.0 W |
| Series Connection (Vacuum only): | |
| Free Flow | 11.0 l/min |
| Max Vacuum | -900 mbar |
| Power Consumption | 8.5 to 10 W |
| Voltage Options | 12 / 24 V DC |
| Max Ambient Operating Temperature | 50 °C |
| Max Media Temperature | 100 °C |
| Elastomers Options | EPDM / Nitrile |
| Other Wetted Parts | PPS (polyphenylene sulphide) |
| Weight | 435 g |
All data is representative for initial selection purposes. It is the responsibility of the user to determine suitability for the intended use.
Brushless (BLDC) motor available in 24 V.
Technical Data
| Parallel Connection: | |
| Free Flow | 15.0 l/min |
| Max Pressure | 2.0 bar |
| Max Vacuum | -75% |
| Series Connection: | |
| Free Flow | 12.0 l/min |
| Max Pressure | 2.0 bar |
| Max Vacuum | -94% |
| Voltage | 24 V DC |
| Power Consumption | 11.0 to 30.0 W |
| Speed Input | 0.5* to 4.5 V (445 to 4000 rpm) |
| *not recommended to run below 400 rpm (0.45 V) | |
| Frequency (RPM) 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 / 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 0.45 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.