MV 2 VARIO select, CH

Four-stage diaphragm pumps - like the MV 2 VARIO select - are an excellent solution for continuous, oil-free pumping of non-corrosive gases at fractional millibar vacuum levels. Wetted parts are made of aluminum, stainless steel and carefully selected plastics suitable for a wide range of non-corrosive applications. The MV 2 VARIO select continuously adapts its motor speed to hold the desired vacuum level. That means the pump is whisper-quiet and generates ultra-low vibrations, and has high leak tightness. The highly flexible fabric-reinforced double FKM diaphragm is ideal for extended operating life. The VARIO® design includes the variable speed pump and the VACUU·SELECT vacuum controller with an external gauge head. The demand-responsive motor speed control on VARIO® models further extends the already long lifetimes of diaphragms and valves.

Key features

• Max. pumping speed 50 Hz: 3.3 m 3 /h
• Max. pumping speed 60 Hz: 1.9 cfm
• Ultimate vacuum: 0.3 mbar / 0.2 torr
• Number of heads: 4
• Number of stages: 4
• Vacuum controller: VACUU·SELECT
• 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: small flange KF DN 16