Laboratory vacuum pump MD 4C NT

diaphragmoil-freemulti-stage

Overview

• outstanding chemical resistance and superior vapor tolerance
• exceptionally high performance even at low vacuum
• excellent ultimate vacuum even with gas ballast
• whisper quiet and very low vibration
• long diaphragm life, maintenance-free drive system

Product summary
Three-stage chemistry-design diaphragm pump for continuous, oil-free pumping of corrosive gases and vapors. All wetted parts are made of chemically resistant fluoroplastics. PTFE sandwich diaphragms provide increased reliability and extended operating life. Gas ballast valve and very good ultimate vacuum (even with gas ballast) allow pumping of condensable vapors of high-boiling solvents. NT-series features improved performance data, easy service and superior vapor tolerance.

Key product details
Ultimate vacuum: 1.5 mbar
Ultimate vacuum with gas ballast: 3 mbar
Max. pumping speed 50 Hz: 3.4 m3/h
Max. pumping speed 60 Hz: 2.2 cfm
Number of heads: 4
Number of stages: 3
Inlet connection: Hose nozzle DN 8-10 mm
Outlet connection: Hose nozzle DN 8-10 mm
Rated motor power: 0.25 kW
Rated motor speed at 50/60 Hz: 1500/1800 min-1
Protection class IEC 60529: IP 40
Rated mains voltage range: 230 V
Mains frequency: 50-60 Hz

Technical data and graphs (selected)
Max. pumping speed 50 Hz: 3.4 m3/h
Max. pumping speed 60 Hz: 2.2 cfm
Ultimate vacuum: 1.5 mbar / 1.1 torr
Ultimate vacuum with gas ballast: 3 mbar / 2.2 torr
Number of heads: 4
Number of stages: 3
Lower ambient temperature (operation): 10 °C
Upper ambient temperature (operation): 40 °C
Lower ambient temperature (storage): -10 °C
Upper ambient temperature (storage): 60 °C
Max. back pressure (abs.): 1.1 bar
Inlet connection: Hose nozzle DN 8-10 mm
Outlet connection: Hose nozzle DN 8-10 mm
Rated motor power: 0.25 kW
Rated motor speed at 50/60 Hz: 1500/1800 min-1
Protection class IEC 60529: IP 40
Dimension L in mm: 328 mm
Dimension B in mm: 243 mm
Dimension H in mm: 198 mm
Weight: 14.3 kg
Noise (sound pressure level) in dBA at 50 Hz: 45 dBA
ATEX conformity: II 3/- G Ex h IIC T3 Gc X (internal atmosphere only)
NRTL certification: Yes
Items supplied: Pump completely mounted, ready for use, with manual.

Configuration / Options
Available mains plug options (example variants shown on product page): CEE, CH, CN, UK, US (plug selection affects article number / variant). Selected example article number for displayed configuration: 20736400.

Characteristics / specifications

• Design: three-stage diaphragm pump, chemically resistant fluoroplastic wetted parts
• Diaphragm: PTFE sandwich diaphragms for extended life
• Pumping medium: corrosive gases and vapors, suitable for condensable vapors with gas ballast
• Pumping speed (50 Hz): 3.4 m3/h
• Ultimate vacuum: 1.5 mbar (1.1 torr)
• Ultimate vacuum with gas ballast: 3 mbar (2.2 torr)
• Rated motor power: 0.25 kW; speeds: 1500/1800 min-1 (50/60 Hz)
• Connections: Hose nozzle DN 8-10 mm (inlet and outlet)
• Protection class: IP 40
• Operational ambient temperature: 10 °C to 40 °C; storage: -10 °C to 60 °C
• Max. back pressure (absolute): 1.1 bar
• Dimensions (L × B × H): 328 × 243 × 198 mm
• Weight: 14.3 kg
• Noise level: 45 dBA (50 Hz)
• Certifications: ATEX (see above) and NRTL certified
• Scope of delivery: pump fully mounted, ready for use, with manual