PTFE Diaphragm Vacuum Pump 20 L/min, 8 mbar Double-Stage Oil-Free Pump for Corrosive Gases

The Master Science Double-Stage PTFE Diaphragm Vacuum Pump is built for vacuum work where the gas stream carries acid or alkaline vapour. The pump head is PTFE, the diaphragm is a PTFE composite and the valve plates are FFPM, so the parts that meet the media resist chemical attack.

Two pumping stages reach an ultimate vacuum of 8 mbar at up to 20 L/min. Because it runs dry, there is no oil to change and no oil mist in the lab. It is rated for continuous operation, stays under 60 dB and has overheat protection.

Technical Specifications

Full specifications of the Master Science Double-Stage PTFE Diaphragm Vacuum Pump:

• Brand: Master Science
• Model Number: MSVACP-D20SWISS
• SKU: MSVACP-D20SWISS
• Brand: Master Science
• Model: MSVACP-D20SWISS
• SKU: MSVACP-D20SWISS
• Max. pumping speed: 20 L/min
• Pump head type: Double-stage
• Ultimate vacuum: 8 mbar
• Max. operating pressure: 1 bar
• Rated speed: 1450 rpm
• Suitable media: Strong acid and strong alkaline gases
• Interface: 10 mm
• Media and ambient temperature: 5-40°C
• Ambient relative humidity: <80%
• Pump head material: PTFE
• Diaphragm material: PTFE composite
• Valve plate material: FFPM
• Operating mode: Continuous
• Noise: <60 dB
• Power supply: 110 V / 220 V, 50 Hz
• Rated power: 130 W
• Dimensions (L×W×H): 315 × 165 × 210 mm
• Net weight: 11.5 kg

Key Benefits

• Handles corrosive vapour: PTFE head, PTFE composite diaphragm and FFPM valves let the Master Science Double-Stage PTFE Diaphragm Vacuum Pump work with strong acid and alkali gases.
• Deep vacuum without oil: Two stages reach 8 mbar with no oil changes and no oil mist.
• Long diaphragm life: The composite diaphragm resists fatigue better than rubber types.
• Safe for long runs: Continuous duty rating plus overheat protection suit all-day evaporation work.

For higher flow at moderate vacuum, see also our chemical-resistant PTFE diaphragm vacuum pump range, which complements the Master Science Double-Stage PTFE Diaphragm Vacuum Pump.

Product Features

Chemical resistance

• PTFE pump head
• PTFE composite diaphragm with high corrosion and fatigue resistance
• FFPM valve plates

Performance

• 20 L/min maximum pumping speed
• 8 mbar ultimate vacuum from a double-stage head
• 1450 rpm rated speed, 10 mm interface

Operation

• Oil-free, maintenance-free design
• Low noise (<60 dB) and low vibration
• Overheat protection, continuous operation

Applications

The Master Science Double-Stage PTFE Diaphragm Vacuum Pump is mainly used for:

• Rotary evaporation
• Vacuum drying ovens
• Vacuum concentration
• Vacuum distillation
• Solid-phase extraction manifolds

Standard Accessories Included

• Diaphragm vacuum pump (main unit)

Vacuum Problems the Master Science Double-Stage PTFE Diaphragm Vacuum Pump Solves

Oil pumps and rubber-diaphragm pumps struggle with aggressive solvents. The Master Science Double-Stage PTFE Diaphragm Vacuum Pump addresses:

• Corroded pump parts: PTFE and FFPM wetted parts withstand acid and alkali vapour.
• Oil changes and oil mist: Dry running removes oil maintenance and contamination.
• Weak vacuum for evaporation: A two-stage head reaches 8 mbar for low-boiling and mid-boiling solvents.
• Noisy bench equipment: Operation stays under 60 dB with low vibration.