Chemistry diaphragm pump MD 4CRL NT

Chemistry diaphragm pump MD 4CRL NT
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MD 4CRL NT
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MD 4CRL NT

VACUUBRAND736445ca. 198 mmca. 243 mmca. 19.8 kg

For applications requiring an especially high leak tightness of the pump, we recommend the MD 4CRL NT. The three-stage construction provides the advantageous combination of high pumping speed and very low ultimate vacuum. All major parts of the MD 4CRL NT in contact with pumped media are made of chemically resistant fluoroplastics or a special, highly corrosion-resistant stainless steel. Well-proven PTFE sandwich diaphragms provide increased reliability and extended operating life. Every single pump is tested for an integral leakage rate of 0.001 mbar l/s.

Performance features

  • outstanding chemical resistance
  • exceptionally high performance even close to the very low ultimate vacuum
  • integral leakage rate 0.001 mbar l/s verified at every single pump
  • whisper quiet and very low vibration
  • long diaphragm life, maintenance-free drive system

Technical data

Unit Converter productInquiryCatcherAlt
Technical dataUnit MD 4CRL NT
Number of heads / stages4 / 3
Max. pumping speed at 50/60 Hzm3/h3.4 / 3.8
Max. pumping speed at 50/60 Hzcfm2.0 / 2.2
Ultimate vacuum (abs.)mbar/torr1.5 / 1.1
Integral leakage ratembar l/s0.001
Ambient temperature range (operation)°C10 - 40
Ambient temperature range (storage)°C-10 - 60
Max. back pressure (abs.)bar1.1
Inlet connectionSmall flange KF DN 16
Outlet connectionSmall flange KF DN 16
Rated motor powerkW0.25
Rated motor speed at 50/60 Hzmin-11500/1800
Degree of protectionIP 40
Dimensions (L x W x H)mm325 x 243 x 198
Weightkg19.8
Noise level at 50 Hz, typ.dBA45
NRTL certificationCanada and the USA
ATEX conformity (only 230V)II 3G IIC T3 X Internal Atm. only
Items suppliedPump completely mounted, ready for use, with manual.
AccessoriesPTFE tubing KF DN 16 (1000 mm: 686031)
Stainless steel tubing KF DN 16 (1000 mm: 673336)

MD 4CRL NT - Pumping speed graph at 50 Hz

MD 4CRL NT - Pumping speed graph at 50 Hz

MD 4CRL NT - Pump down graph at 50 Hz (10 l volume)

MD 4CRL NT - Pump down graph at 50 Hz
(10 l volume)

MD 4CRL NT - Pumping speed graph at 60 Hz

MD 4CRL NT - Pumping speed graph at 60 Hz

MD 4CRL NT - Pump down graph at 60 Hz (10 l volume)

MD 4CRL NT - Pump down graph at 60 Hz
(10 l volume)

MD 4CRL NT - Dimension sheet

MD 4CRL NT - Dimension sheet

-Technical data are subject to change without notice-

Ordering data

Product nameMains voltage and frequencyPlugOrder no.
MD 4CRL NT 200-230 V~ 50-60 Hz
100-115 V~ 50-60 Hz
120 V~ 60 Hz
IEC plug EN 60320 736445

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