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20K Series

The 20K series is a single headed miniature diaphragm pump. With a 'best-in-class' body width of just 12 mm it is designed for applications requiring minimised size, power and weight. Typical examples include portable environmental gas analysis, medical monitoring, medical therapy and chemical agents / biohazard detection.

Recognising that instrument miniaturisation often results in low performance requirements, the 20K is additionally available in a 'Low Flow' configuration which maximises efficiency (hence also battery life) at the lower end flow range of this series. This is achieved through the use of optimised low speed coreless motors combined with a pump head specifically designed for low flow. These pumps are listed as below as 'Coreless LF'. Additionally stable flow valve technology ensures consistent operation at flows below 50 ml/m without influence from the pump's orientation.

Use of high strength glass filled PPS plastics ensure a robust construction with a high degree of air-tightness throughout the performance and environmental operating range.

› Flow rate to 500 ml/min
› Extremely compact with a 12 mm body
› Low Flow option
› Stable flow valve technology
› Choice of iron core, and coreless motors

For extended performance, pulsation reduction and the versatility of 2 independent gas channels, this series is also available as a double headed version (20KD) offering flow to 750 ml/min, vacuum down to 70% and pressure up to 1.5 bar.

Flow control is available in combination with PWM Flow Controller.

Return to Miniature Diaphragm Pumps for Air and Gas range.

Economic motor option available in 6.5 V (which may be run to max. 8.0 V)

Technical Data

Free Flow at 8.0 V	500 ml/min
Free Flow at 6.5 V	350 ml/min

Max Pressure	800 mbar
Max Vacuum	-500 mbar

Power Consumption at 8.0 V	0.48 to 1.28 W
Power Consumption at 6.5 V	0.32 to 0.98 W

Motor Termination	Solder tags

Operating Temperature Range	5 to +60 °C
Operating Humidity Range	5 to 95% RH

Elastomers Options	EPDM
Other Wetted Parts	PPS (Polyphenylene Sulphide)
Tube Connection	3.0 mm barb for 2.0 to 2.5 mm ∅ tubing
Weight	22g

Order Information

Part Number: 20000.003 6.5 V DC / EPDM ⇒

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

Low power consumption with excellent life available in 3.3 V (which may be run to max. 4.5 V).

Technical Data

Free Flow at 4.5 V	550 ml/min
Free Flow at 3.3 V	400 ml/min

Max Pressure	800 mbar
Max Vacuum	-500 mbar

Power Consumption at 4.5 V	0.94 to 1.26 W
Power Consumption at 3.3 V	0.56 to 0.89 W

Motor Termination	100 mm leads (red +, black -)

Operating Temperature Range	5 to +60 °C
Operating Humidity Range	5 to 95% RH

Elastomers Options	EPDM
Other Wetted Parts	PPS (Polyphenylene Sulphide)
Tube Connection	3.0 mm barb for 2.0 to 2.5 mm ∅ tubing
Weight	16g

Order Information

Part Number: 20100.001 3.3 V DC / EPDM ⇒

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

The LF option provides the advantages of a coreless motor, however both motor and pump are optimised for low speed / low flow operation. Available in 3.3 V (which may be run to max. 4.5 V).

Technical Data

Free Flow at 4.5 V	350 ml/min
Free Flow at 3.3 V	250 ml/m,in

Max Pressure	450 mbar
Max Vacuum	-350 mbar

Power Consumption at 4.5 V	0.12 to 0.32 W
Power Consumption at 3.3 V	0.07 to 0.27 W

Motor Termination	100 mm leads (red +, black -)

Operating Temperature Range	5 to +60 °C
Operating Humidity Range	5 to 95% RH

Elastomers Options	EPDM
Other Wetted Parts	PPS (Polyphenylene Sulphide)
Tube Connection	3.0 mm barb for 2.0 to 2.5 mm ∅ tubing
Weight	16g