Used Vacuum Pumps›Pfeiffer›Duo
Pfeiffer · Duo
Pfeiffer Duo 65 — rotary vane, ~20 m³/h
Original title: USED PFEIFFER WD235 VACUUM PUMP OXTA250A PPS20761 PKD46602A DUO65 PPW21000A
📍 USA
🔴 Check carefully
Suitable for FD260/FD440 but price significantly above market median.
Condition from photo
Externally clean, mounted on wooden pallet with motor and control unit. No visible oil leaks or damage.
Likely refurb / add-ons
- Oil change and filter service (~€110)
- Soft-starter replacement if worn (~€280)
- Exhaust filter replacement (~€80)
Watch out for
- Asking price €8,835 is 3–13× higher than recent comparable sales (median €1,100,
- Multiple model designations in title (WD235, OXTA250A, PPS20761, PKD46602A, DUO6
WAVE AI estimate from photo + specs only — not a substitute for our physical pre-purchase check.
Specifications
- Type
- Oil-sealed rotary vane
- Pumping speed
- ~20 m³/h
- Water-vapour tolerance
- ~120 g/h
- Ultimate vacuum
- ≤ 0.001 mbar
- Year
- 2008 (per nameplate)
- Source
- eBay
- Listing #
- eBay #358467382155
- Last verified
- Jul 5, 2026
Fits WAVE machines: FD260, FD440
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
- Serial
- 21328480
- Year (plate)
- 2008
- Manufacturer Part No.
- PK D46 602 A
- Pumping speed S(N₂)
- max. 70 m³/h
- Oil
- P3 4.2 l
- Speed
- max. 1800 1/min
- Weight
- 70 kg
- Origin
- Made in Germany
- Approvals
- CE
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.