Rotary evaporator vacuum pump MZ 2C EX

laboratorydiaphragmdouble-diaphragm

Overview

• Chemical-resistant wetted parts and vapor tolerance
• Flameproof motor with integrated self‑locking overload and overtemperature protection for direct 230 V / 50 Hz single‑phase supply
• Internal and outlet overpressure safety relief valves
• Safety diaphragm technology with optional inert gas purge and diaphragm break detection

Description
ATEX chemistry diaphragm pump MZ 2C EX provides oil‑free chemical pumping for applications in potentially explosive atmospheres such as rotary evaporators and vacuum drying ovens. The ATEX approval covers both the pump interior (in contact with pumped gases) and the pump's surrounding installation area. All wetted parts offer chemical resistance and are largely manufactured from antistatic materials. A separate gas ballast connection for inert gas use is included. Items supplied: pump fully assembled, manual, 10 m cable without plug.

Technical data and graphs
Max. pumping speed 50 Hz: 1.9 m3/h
Ultimate vacuum: 12 mbar / 9 torr
Ultimate vacuum with gas ballast: 18 mbar / 13.5 torr
Number of heads: 2
Number of stages: 2
Operating ambient temperature: 10 °C to 40 °C
Storage ambient temperature: -10 °C to 60 °C
Max. back pressure (abs.): 1.1 bar
Inlet connection: small flange KF DN 16
Outlet connection: small flange KF DN 16
Rated motor power: 0.15 kW
Rated motor speed at 50/60 Hz: 1500 min-1
Protection class IEC 60529: IP 54
Dimensions (L x W x H): 337 x 287 x 251 mm
Weight: 21.6 kg
Noise (sound pressure level) at 50 Hz: 50 dBA
ATEX conformity: Pumping chamber (pumped gases): II 2G Ex h IIC T3 Gb X; Environment with inert purge gas: II 2G Ex h IIB T4 Gb X; Environment without inert purge gas: II 3G Ex h IIB T4 Gc X; Motor: II 2G Ex db IIB T4 Gb
NRTL certification: No
Rated mains voltage: 230 V
Mains frequency: 50 Hz

Characteristics / technical specifications

• Model: MZ 2C EX
• Type: Chemistry diaphragm pump, ATEX approved
• Ultimate vacuum (no gas ballast): 12 mbar (9 torr)
• Ultimate vacuum (with gas ballast): 18 mbar (13.5 torr)
• Pumping speed (50 Hz): 1.9 m3/h
• Heads / stages: 2 heads / 2 stages
• Rated motor power: 0.15 kW; rated motor speed 1500 min-1 (50 Hz)
• Protection class: IP 54
• Connections: Inlet / outlet small flange KF DN 16
• Max. back pressure: 1.1 bar (abs.)
• Rated mains voltage: 230 V; mains frequency: 50 Hz
• Ambient temperature (operation): 10 °C to 40 °C; (storage): -10 °C to 60 °C
• Dimensions (L x W x H): 337 x 287 x 251 mm
• Weight: 21.6 kg
• Noise level: 50 dBA (50 Hz)
• Items supplied: Pump fully assembled, manual, 10 m cable without plug