Diaphragm vacuum pump NP 40

oil-freeDCbrushless DC

Product overview
KNF diaphragm gas pumps transfer or compress gases and vapors and generate a vacuum without contaminating the media. Multiple configurations are available to meet application-specific requirements for size, motor type, control, voltage, chemical resistance, safety, vibration, noise and temperature resistance. All pump variants operate oil-free.

Main performance

• Flow rate (max.): 3.7 l/min
• Pressure (max.): 0 bar (rel.)
• Ultimate vacuum (max.): 210 mbar (abs.)

Benefits

• Can run dry
• High reliability
• Favourable performance-to-size ratio
• Contamination-free transfer (oil-free)
• Maintenance-free operation
• Low pulsation
• Digitally adjustable motor
• Adjustable performance

Special features

• Diaphragm pump design
• Low pulsation

Applications

• Analytical instruments
• Chemical industry
• Climate technology
• Emission monitoring
• Food & beverage industry
• Gas analytics
• Inkjet printing
• Lab equipment
• Medical equipment
• Security and defense
• Vacuum technology

Accessories (selection)

• Silencer — Suitable for hose barbs — Part No. 311970
• Mounting plate — Hole distance 43×22 mm; inner diameter of sleeve 3.5 mm; screws not included — Part No. 164313
• Rubber-bonded metal (silentbloc) — Part No.: on request

Downloads (selected)

• Datasheet NP 40 — PDF (1 MB) - English
• Operating manual NP 40 — PDF (925 KB) - English
• 3D CAD NP 40 — ZIP (74 MB)

Technical specifications

• Flow rate (max.): 3.7 l/min
• Pressure (max.): 0 bar (rel.)
• Ultimate vacuum (max.): 210 mbar (abs.)
• Valve material options: EPDM
• Diaphragm material options: EPDM
• Pump head material options: PPS
• Motor type options: DC, Brushless DC