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Vane Pump RZ 9


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The RZ 9 rotary vane pump by Vacuubrand is a two-stage pump designed for applications requiring deep vacuum and high flow rates. It enables rapid evacuation of volumes while maintaining good water vapor tolerance, thanks to its integrated gas ballast system. Its gas-tight design when stopped eliminates the need for an external anti-suckback valve. Rugged and easy to maintain, it is ideally suited for demanding laboratory environments. The RZ 9 delivers reliable performance across a wide range of ambient temperatures.

Description

RZ 9 Vacuubrand: Reliable Performance for Demanding Vacuum Applications

The RZ 9 rotary vane pump by Vacuubrand stands out for its consistent performance in vacuum applications requiring both high pumping speed and excellent ultimate vacuum levels. Thanks to its two-stage design, it achieves deep vacuum levels, reaching an ultimate pressure of 2 x 10⁻³ mbar without gas ballast. This ability to deliver a strong vacuum while maintaining stable flow rates makes it a reliable choice for a wide range of laboratory processes such as evaporation, drying, vacuum filtration, and degassing.

With a maximum pumping speed of 8.9 m³/h at 50 Hz, the RZ 9 ensures rapid evacuation of even large volumes. It offers excellent water vapor tolerance (up to 40 mbar), making it particularly suited for applications where moisture is present. The integrated gas ballast maintains performance without compromising vacuum quality. The pump’s gas-tight shut-off design eliminates the need for an external anti-suckback valve, protecting sensitive samples and ensuring operational safety.

The RZ 9 comes fully assembled and pre-filled with oil, ready for immediate use. Its large oil capacity (up to 0.85 L) extends maintenance intervals, reducing downtime and overall servicing costs. The telescopic design allows easy access to internal components, simplifying disassembly and cleaning during preventive maintenance.

Operating at a low noise level of 52 dBA, the RZ 9 provides a quiet and comfortable laboratory environment, even during extended use. Its compact size (503 x 156 x 240 mm) enables easy integration into various workspaces, whether as a standalone unit or as part of a larger setup. Weighing 24.8 kg, it remains easy to handle while ensuring stability on the benchtop.

Compatible with a wide range of accessories (flanges, hoses, filters, etc.), the RZ 9 easily integrates into existing systems. It is designed to meet the vacuum requirements of modern laboratories, delivering reliability, user-friendliness, and long service life.

Features

  • Two-stage rotary vane pump
  • Excellent vacuum stability even at high flow rates
  • Gas-tight when stopped (no need for external anti-suckback valve)
  • Quiet operation
  • Easy maintenance thanks to telescopic design
  • Good water vapor tolerance with gas ballast
  • Extended oil change intervals
  • Ideal for high-vacuum laboratory applications

Technical Details

  • Maximum pumping speed (50 Hz): 8.9 m³/h
  • Maximum pumping speed (60 Hz): 6.0 cfm
  • Ultimate vacuum without gas ballast: 2 x 10⁻³ mbar / 1.5 x 10⁻³ torr
  • Ultimate vacuum with gas ballast: 1 x 10⁻² mbar / 0.75 x 10⁻² torr
  • Partial vacuum without gas ballast: 4 x 10⁻⁴ mbar / 3 x 10⁻⁴ torr
  • Water vapor tolerance: 40 mbar / 30 torr
  • Number of stages: 2
  • Ambient temperature (operation): 15 to 40 °C
  • Ambient temperature (storage): -10 to 60 °C
  • Maximum exhaust pressure (absolute): 1.1 bar
  • Oil capacity (min. / max.): 0.45 L / 0.85 L
  • Inlet connection: KF DN 25 flange
  • Outlet connection: KF DN 25 flange
  • Motor power (nominal): 0.30 kW
  • Motor speed (50/60 Hz): 1500 / 1800 rpm
  • Protection class: IP 40 (IEC 60529)
  • Sound level: 52 dBA
  • Dimensions (L x W x H): 503 x 156 x 240 mm
  • Weight: 24.8 kg
  • NRTL certification: No

Compatible Accessories

  • Oil mist filter FO R 8/9/16
  • Butterfly valve VS 25
  • Clamp for KF DN 20/25 flange
  • Outer centering ring KF DN 20/25
  • Flange with hose nozzle DN 25 / DN 10 mm
  • Metal tubing DN 25 with KF flanges
  • Rubber hose DN 10 mm
  • Maintenance kit RE 8

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