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
Market median (sold): €698 from 17 sales in this family
📍 Germany
Suitability for 1 × FD440
Suitable after function testItem type
Complete pump
Technical
Requirements met
Condition
Not evidenced
Data
Type plate + model
🟡 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
- Aug 6, 2026
Fits WAVE machines: FD440, FD440 MAX
Source: official manufacturer · product page: product family · EN · link checked Aug 5, 2026
Price history— Pfeiffer Duo
Exact model: Duo 65
Median €1.223 · 16 cleaned observations · €983–€6.217
Recent sales (Pfeiffer Duo)
- €642Aug 6, 2026Pfeiffer Vacuum DUO 2.5 PK D41 602 A Vacuum Pump Vacuum Pump 0.13kW 2.5m³/h -used
- €642Aug 6, 2026Pfeiffer Vacuum DUO 2.5 PK D41 712 C Vacuum Pump Vacuum Pump 0.15kW 2.9m³/h -used
- €1.072Aug 6, 2026Pfeiffer DUO 030 A Vacuum Pump 30m³/h + AEG AM 90 SX4 Q4 1.1kW 1390/1660RPM Used
- €675Aug 6, 2026Pfeiffer DUO 2.5 PK D41 064F Agilent G3170-80026 Vacuum Pump 3600 RPM Used
- €665Aug 6, 2026Pfeiffer DUO 2.5 PK D41 064F Agilent G3170-80026 Vacuum Pump 220-240V Used
- €654Aug 6, 2026Pfeiffer Duo 2.5 PK D41 064F Vacuum Pump
- €858Aug 6, 2026Pfeiffer Duo 2.5 PK D41 064 E Vacuum Pump Max: 2.9m³/h 3000/min Used
- €858Aug 6, 2026Pfeiffer Duo 2.5 PK D41 064 G Vacuum Pump Max 2.9m³/h 3600/min G3870-80056 Used
- €535Aug 6, 2026Pfeiffer Balzers DUO 004 B Rotary Vane Vacuum Pump -used-
- €733Aug 6, 2026Pfeiffer Vacuum Pump DUO 11 / PK D59 721 C / 0.25-0.3 kW
- €698Aug 6, 2026Pfeiffer Dual Stage Rotary Vane Vacuum Pump DUO 2.5C PK D41 019 C
- €941Aug 6, 2026Pfeiffer Vacuum Model DUO 11 Rotary Vane Pump, 200-240V, 50/60 Hz Excellent C
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.
Traceable assessment
How each pump is assessed
AI helps read images and listing text. The final suitability result is calculated by a fixed engineering rule using evidenced values.
Method version: 5 August 2026
- 1
Identify the item
The title and photos are checked first to confirm that the listing is a complete vacuum pump — not an accessory, spare part or pump head only.
- 2
Establish evidence
The type plate and listing provide specific facts. Manufacturer values are used only for a confirmed model; family-level values stay clearly labelled.
- 3
Compare engineering data
Pumping speed, water-vapour capacity and ultimate pressure are compared with the selected WAVE machine and the chosen safety margins.
- 4
Assess condition separately
A photo or a seller saying “runs” does not replace a vacuum test. Unknown data remain unknown and never become an automatic green recommendation.