Used Vacuum Pumps›Pfeiffer›Duo
Pfeiffer · Duo
Pfeiffer Duo 65 — rotary vane, 65 m³/h
Original title: Pfeiffer Pumpstand Drehschieber DUO65 mit ONFR und Wälzkolben WKP250A
📍 Germany
🟡 OK with refurb
Suitable for FD440/MAX; price high vs. recent market; inspect internals before purchase.
Condition from photo
Exterior clean, mounted on frame with ABB motor and Pfeiffer backing pump. Oil level visible in sight glass. No obvious leaks or damage in photos.
Likely refurb / add-ons
- Oil change & filter service (~€80–120)
- Exhaust filter replacement (~€80)
- Soft-starter for motor (~€280)
Watch out for
- Asking price €4,889 is 4–7× recent median (€1,100); verify condition justifies p
- Backing pump (ONFR 035/065 D) adds value but also complexity; confirm both units
WAVE AI estimate from photo + specs only — not a substitute for our physical pre-purchase check.
Specifications
- Type
- Oil-sealed rotary vane
- Pumping speed
- ~65 m³/h
- Water-vapour tolerance
- ~360 g/h
- Ultimate vacuum
- ≤ 0.001 mbar
- Year
- 2003 (per nameplate)
- Source
- eBay
- Listing #
- eBay #166498222329
- Last verified
- Jul 5, 2026
Fits WAVE machines: FD440, FD440 MAX
Price history— Pfeiffer Duo
Median €819 · 1230 observations · €66–€9.484
Recent sales (Pfeiffer Duo)
- €744May 13, 2026Pfeiffer DUO 3 PK D41 062 K / Agilent G7077-80055 Rotary Vane Vacuum Pump
- €3.255May 1, 2026(Reserved)Teledyne AQUATek 100 Stratum Purge&Trap w/Pfeiffer DUO 2.5 G3170-80024
- €1.457Apr 14, 2026Pfeiffer DUO 65M PK D46 Vacuum Pump
Source: eBay sold listings (Apify aggregation). Year inferred from listing title when present.
Type plate (AI reading)
- Exact model
- DUO 65
- Year (plate)
- 2003
- Model
- DUO 65
- Manufacturer Part No.
- PK D46 602 A
- Pumping speed S(N₂)
- 65 m³/h
- Oil type
- P3
- Oil volume
- 4.2 l
- Weight
- 65 kg
- Electrical (50 Hz)
- 230/400 V 50 Hz, 1.5 kW
- Electrical (60 Hz)
- 440–480 V 60 Hz, 1.7 kW
- Origin
- Made in Germany
- Approval
- CE 2003/05
Auto-extracted from one of the listing photos. Verify on the real unit before purchase.
What to look for on this family
Two-stage oil-sealed with gas-ballast. Common pulls from semicon and lab decommissioning — check the oil sight glass before bidding.
Manufacturer datasheet — Pfeiffer Duo
- Bauart
- Zweistufige ölgedichtete Drehschieberpumpe
- Saugvermögen (50 Hz)
- 1.25 / 2.5 / 5 / 10 / 20 / 35 / 65 m³/h (modellabhängig)
- Enddruck (ohne Gasballast)
- ≤ 6 × 10⁻⁴ mbar
- Enddruck (mit Gasballast)
- ≤ 4 × 10⁻³ mbar
- Wasserdampfverträglichkeit
- ca. 110 g/h bei DUO 10
- Wasserdampfkapazität
- ca. 30 mbar (mit Gasballast)
- Saugstutzen
- DN 16/25 ISO-KF (modellabhängig)
- Auslass
- DN 16/25 ISO-KF
- Betriebsspannung
- 1-Ph 230 V / 3-Ph 400 V (modellabhängig)
- Motorleistung
- 0.25 – 1.5 kW
- Drehzahl (50 Hz)
- 1500 1/min
- Drehzahl (60 Hz)
- 1800 1/min
- Ölsorte
- Pfeiffer P3 (mineralisch) bzw. F4 (synthetisch)
- Ölfüllung
- 0.4 – 2.0 l (modellabhängig)
- Ölwechsel-Intervall
- ca. 2000 Bh oder bei Verfärbung
- Geräuschpegel
- 52 – 60 dB(A)
- Gewicht
- 10.5 – 60 kg (modellabhängig)
- Umgebungstemperatur
- 12 – 40 °C
- Schutzart Motor
- IP54
- Hersteller
- Pfeiffer Vacuum GmbH, D-35614 Asslar
Curated from the manufacturer's official datasheet for this family / model. The specific pump may vary slightly by variant.