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3MD Series

The 3MD series is the new compact version of the double 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 3MD series is offered with 2 different motors: quality DC and brushless DC.

› Flow rate to 2.5 l/min
› Robust / long life
› Detachable motor
› Single (3K) and Quad (3MQ) versions are also available

Gas versions of this series is available with 3K, 3KD and 3KQ.

Fixing brackets are included as standard.

Flow control is available in combination with PWM Flow Controller.

Return to Miniature Diaphragm Pumps for Liquid range.


Brushed Motor

Quality brushed motor available in 12 and 24 V.

Available to purchase online via BOX-it (see order information below).

Technical Data

Free Flow 2.5 l/min
Max Pressure 2.0 bar
Max Vacuum -600 mbar
Free Flow (gas / dry) 3.7 l/min
Max suction Height (dry) 4.5 m H2O
Voltage Options 12 / 24 V DC
Power Consumption 8.4 to 15.5 W
Max Ambient Operating Temperature 50 °C
Max Media Temperature 100 °C
Elastomers Options EPDM / Nitrile
Other Wetted Parts PPS (polyphenylene sulphide)
Weight 420 g
The above data is for parallel head connection. Series connection should only be used if higher dry suction height is required.




 

Order Information

Part Number:     3232.129     12 V DC / EPDM     ⇒ BOX-it
Part Number:     3232.254     24 V DC / EPDM     ⇒ BOX-it


Brushless Motor    

Brushless DC motor in 24 V DC with integrated driver.

Long life combined with elegant speed (flow) control via a 0 to 2.0 V DC input, rpm feedback
output and a 5 V DC output is for convenient speed control via external potentiometer.

Available to purchase online via BOX-it (see order information below).

Technical Data

Free Flow 2.5 l/min
Max Pressure 2.0 bar
Max Vacuum -600 mbar
Free Flow (gas / dry) 3.7 l/min
Max Suction Height (dry) 4.5 m H2O
Voltage Options 24 V DC
Power Consumption 7.2 to 19.7 W
Motor Inputs / Outputs (further details in Motor Information below)
Speed Input 0 to 2 V (0 to 1600 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 2.0 V 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 2 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.

 

Order Information

Part Number:     3232.610       24 V BLDC / EPDM    ⇒ BOX-it

All data is representative for initial selection purposes. It is the responsibility of the user to determine suitability for the intended use.

Boxer Pumps
Boxer GmbH · For gas & liquids · 20 Belsize Avenue · London NW3 4AU
Phone: +44 (0)20 7794 4080 · Fax: +44 (0)20 7431 1426 · mail@boxerpumps.com · boxerpumps.com