VACUUBRAND MD 4 VARIO Select Diaphragm Pump

VACUUBRAND MD 4 VARIO Select Diaphragm Pump is a high-performance, oil-free three-stage diaphragm pump engineered for precise, contamination-free vacuum processes in analytical and physics applications. With advanced VARIO technology, it automatically adjusts motor speed to maintain the desired vacuum level, maximizing diaphragm life and ensuring exceptionally quiet operation.

Key Features:

• Ultimate Vacuum: 1 mbar (0.75 Torr)
• Max Pumping Speed: 3.4 CFM at 60Hz (5.7 m³/h at 50Hz)
• VACUU·SELECT controller with intuitive graphical interface and predefined laboratory applications
• Oil-free, contamination-free pumping for clean processes and low maintenance
• Excellent diaphragm lifetime minimizes operational costs
• Turbo-mode capability for use as a backing pump for turbo molecular pumps
• Low noise level at only 45 dBA and ultra-low vibration for improved working comfort

Advanced VARIO Control

The integrated VACUU·SELECT vacuum controller continuously adapts the pump’s motor speed, providing precise vacuum control and optimal process stability. This demand-responsive regulation enhances pump longevity and efficiency, making it an excellent alternative to rotary vane pumps especially where oil back-diffusion must be avoided.

Typical Applications

• Backing (roughing) pump for turbomolecular drag pumps
• Degassing of viscous media and exhaust gas analytics
• Physics and analytical applications requiring high volume flow and deep vacuum

Included Items

• Fully assembled pump, ready to use
• Power cord
• Operator’s manual & documentation
• 2-Year Manufacturer’s Warranty

Technical Specifications