Edwards RV3 Rotary Vane Vacuum Pump DN25KF 3/4 HP 115-240V Single Phase

Edwards RV3 Rotary Vane Vacuum Pump DN25KF 3/4 HP 115-240V Single Phase

The Edwards RV3 is a two-stage rotary vane vacuum pump designed for general laboratory and industrial roughing applications. It features dual DN25KF (KF25) ports and a thermally protected single-phase motor that can be wired for either 115–120V or 220–240V operation, making it suitable for use in both North American and international lab environments. The motor nameplate confirms 3/4 HP output at 1425/1725 RPM (50/60 Hz) with an IP44 enclosure rating.

Specifications & What's Included

• Manufacturer: Edwards (Edwards High Vacuum International, Crawley, Sussex, England)
• Model: RV3
• Part / Code Number: A462-01-903
• Pump Type: Two-stage rotary vane vacuum pump
• Inlet/Outlet Ports: DN25KF (KF25 / NW25) — 2 ports
• Motor Power: 3/4 HP
• Motor Speed: 1425 RPM (50 Hz) / 1725 RPM (60 Hz)
• Voltage (selectable): 115–120V LOW or 220–240V HIGH
• Phase: Single phase (1PH)
• Frequency: 50/60 Hz
• Motor Enclosure: IP44, thermally protected
• Motor Standards: IEC34, UL1004 / NRTL/C (ETL listed)
• Amperage: 6.6A @ 115V / 3.4–3.3A @ 220–240V
• Power Factor: 0.83–0.93
• Country of Manufacture: England
• Includes: Pump unit with oil fill/drain ports and KF25 port caps; electrical cover plate present (4 mounting screws missing)
• Oil: Drained prior to shipment — must be refilled with appropriate vacuum pump oil before operation

Applications

The Edwards RV series is one of the most widely used lines of two-stage rotary vane roughing pumps in laboratory and light industrial settings. The RV3 is commonly used as a standalone rough vacuum pump or as a backing pump for turbomolecular pumps in high-vacuum systems. Typical applications include freeze dryers and lyophilizers, thin-film deposition (evaporation and sputtering systems), scanning electron microscopes and other electron-beam instruments, mass spectrometers, leak detectors, vacuum ovens, and general laboratory vacuum manifolds. The KF25 (DN25KF) port standard is the dominant quick-connect flange system in laboratory vacuum plumbing, making the RV3 straightforward to integrate into existing vacuum lines with standard KF25 clamps and centering rings. The dual-voltage motor wiring (115V / 230V selectable) has made the RV series a go-to portable roughing pump across different facility power standards. Edwards has manufactured the RV series for decades; the RV3 represents the compact end of the range, suited for benchtop or under-bench installation where footprint is a consideration.