Used Vacuum Pumps›Pfeiffer›Duo
Pfeiffer · Duo
Pfeiffer Duo 2.5 — rotary vane, 2.9 m³/h
Original title: Pfeiffer DUO 2.5 Vakuumpumpe - 220V
📍 USA
🟡 OK with refurb
Suitable for FD260/FD440; typical refurb needed. Price below median.
Condition from photo
Exterior clean, no visible oil leaks. Labels legible. Motor and pump housing intact. Age and internal wear cannot be assessed from photos.
Likely refurb / add-ons
- Oil change and filter service — €80–120
- Exhaust filter replacement — €60–80
- Soft-starter (optional, extends motor life) — €250–300
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
- 2014 (per nameplate)
- Source
- eBay
- Listing #
- eBay #396140065495
- 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 2.5
- Serial
- 21977862
- Year (plate)
- 2014
- Agilent No.
- G3370-89054
- Manufacturer Part No.
- PK D41 063 G
- Pumping speed S(N₂)
- max. 2.9 m³/h
- Oil
- IN 45 0.4 l
- Weight
- 10.5 kg
- Speed
- max. 3600 1/min
- Electrical (50 Hz)
- 200 V ±10% 1.6 A
- Electrical (60 Hz)
- 208 V ±10% 2.0 A
- Origin
- Made in Germany
- Approvals
- CE, TÜV
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.