Product Description

The powerful two-stage RZ 9 rotary vane pumps are the ideal solution for a wide range of laboratory and process applications that require high pumping speed. It has best performance in laboratory applications. An excellent choice for freeze dryers up to 10 liters, centrifugal concentrators or other low-temperature evaporations of high boiling point solvents, molecular distillations, schlenk lines and other applications where diaphragm pumps cannot provide sufficient vacuum. Typical applications are lyophilization, fine vacuum distillation, drying chambers, fast evacuation of vessels, and the pumping of large amounts of vapor.

Performance Features:

  • Very high flow rates even at vacuum levels approaching ultimate vacuum
  • High water vapor tolerance due to efficient gas ballast; very good ultimate vacuum even with gas ballast
  • Vacuum-tight at switch-off; external anti-suckback valve not needed
  • Large oil volume: Long intervals between oil changes
  • Ease of maintenance due to telescopic design
Technical Data Unit RZ 9
Number of Stages   2
Max. Pumping Speed at 50/60 Hz m3/h 8.9 / 10.2
Max. Pumping Speed at 50/60 Hz cfm 5.2 / 6.0
Ultimate Partial Vacuum (abs.) mbar 4 x 10-4
Ultimate Vacuum (abs.) mbar/torr 2 x 10-3 / 1.5 x 10-3
Ultimate Vacuum (abs.) with Gas Ballast mbar/torr 1 x 10-2 / 0.75 x 10-2
Water Vapor Tolerance with Gas Ballast mbar 40
Ambient Temperature Range (Operation) °C 12 to 40
Ambient Temperature Range (Storage) °C -10 to 60
Oil Capacity (B-Oil) Min / Max l 0.2 / 0.8
Max. Back Pressure (abs.) bar 1.1
Inlet Connection   Small Flange KF DN 25
Outlet Connection   Small Flange KF DN 25
Rated Motor Power kW 0.37
Rated Motor Speed at 50/60 Hz min-1 1500/1800
Degree of Protection   IP 40
Noise Level at 50Hz, Typ. dBA 52
Dimensions (LxWxH) Inch 18.11 x 5.98 x 9.13
Items supplied   Pump oil filled and completely mounted, ready for use, with manual


Manufacturer Brandtech Scientific
Actual Product Weight 53.35 lbs
Overall Height 9.13"
Overall Length 18.11"
Overall Width 5.98"
Country of Manufacture Germany
Item Ships From Connecticut

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Seller warrants that its Products are free from defects in materials and workmanship as set forth in applicable operating instructions at the date of shipment to the original Buyer and will conform to the Contract specifications or such other specifications which constitute technical improvements to the Product.* The exclusive remedy of the Buyer in the event of a breach of the foregoing warranty is replacement or repair (at Seller's option) of any defective Product. No goods shall be returned to Seller for repair or replacement pursuant to this warranty without prior written approval and accompanied by a completed health and safety declaration (as specified in Paragraph 7). All cleaning, decontamination, and shipping costs shall be the sole responsibility of the Buyer together with any damage to the goods that might occur in transit to or from Seller. Under no circumstances does Seller's responsibility or warranty extend to Products other than those manufactured or distributed by Seller; nor does Seller's liability extend to any Products, articles or parts which are furnished by Buyer or obtained from other manufacturers or suppliers at Buyer's request and/or in accordance with Buyer's specifications. In the event that Seller is unwilling or unable to repair or replace any defective or nonconforming Product due to change in technical standards, technical modifications, unavailability of material or parts, or any other reason, Buyer shall be entitled to a return of the purchase price paid for such Product as its sole and exclusive remedy. Seller assumes no responsibility for the effective performance of any specific scientific application relying on Products supplied under this Contract beyond published Product specifications at the time of sale. Seller assumes no responsibility for conformance with local building codes as they may apply in the installation of Products supplied by the Seller. Seller assumes no responsibility whatsoever for the accuracy of designs, specifications or materials furnished or specified by Buyer.


No return will be accepted by the seller for any reason without prior written authorization. Returns will be accepted only if products are in new and unused condition and accompanied by a health and safety declaration as regards potential contamination with hazardous materials due to customer use of the product. The manufacturer reserves the right to assess a 25 percent restocking fee at their discretion. All shipping charges remain payable. This manufacturer assesses order cancellation fees if a submitted order is cancelled prior to shipment.


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