Chemistry Diaphragm Vacuum Pump MD 4C EX VARIO

• Type: MD 4C EX VARIO
• Flow rate: 3.7 m³/h
• Ultimate vacuum: 3 mbar
• Ultimate vacuum with gas ballast: 10 mbar
• No. of stages: 3
• Connection suction side: KF DN 25
• Connection pressure side: DN 8-10 mm
• Noise level: 42 db(A)
• Dimensions (WxDxH): 469 x 265 x 305 mm
• Weight: 28.9 kg
• Plug type: stranded wire
• Power supply: 230 V, 50 Hz
• IP code: IP 54

With the ATEX VARIO^® chemical diaphragm pumps, the vacuum can be precisely controlled by adjusting the motor speed. The pump is driven by an additional control signal line. The optional vacuum controller VACUU·SELECT, with an ATEX vacuum sensor and Connection Box 100, enables fully automatic evaporation without the need for parameter setting or user programming. With the adaptive control, it finds the boiling pressure indepentently and adjusts the vacuum continuously and optimally according to the vapour pressure.

• High chemical resistance and oil-free operation
• The absence of sliding surfaces ensures that ignition sources are avoided
• Short process times thanks to hysteresis-free VARIO^® vacuum control
• The pump runs only as fast as necessary, according to demand: minimal power consumption, extended maintenance intervals, quiet operation

ATEX compliance:
Pumping chamber (gases pumped): II 2G Ex h IIC T3 Gb X
External area (pump surroundings): II 2G Ex h IIB T4 Gb X (with inert gas purging) / II 3G Ex h IIB T4 Gc X (without inert gas purging)
Motor: II 2G Ex db IIB T4 Gb

A vacuum controller, ATEX vacuum sensor and Connection Box 100 are required for operation. Please order separately.