Used Vacuum Pumps›Pfeiffer›Duo
Pfeiffer · Duo
DUO 35/ DUAL STAGE ROTARY VANE PUMP 35 M3H 560 RPM MEFA100L4 PFEIFFER/BALZERS
Market median (sold): €716 from 20 sales in this family
📍 USA
Suitability for 1 × FD440
Not suitableItem type
Not confirmed
Technical
Requirements met
Condition
Not evidenced
Data
Model confirmed
AI assessment will be added on the next refresh cycle.
Specifications
- Type
- Oil-sealed rotary vane
- Pumping speed
- ~35 m³/h
- Water-vapour tolerance
- ~200 g/h
- Ultimate vacuum
- ≤ 0.001 mbar
- Source
- eBay
- Listing #
- eBay #305542425162
- Last verified
- Aug 6, 2026
Fits WAVE machines: FD440
Source: official manufacturer · product page: product family · EN · link checked Aug 5, 2026
Price history— Pfeiffer Duo
Exact model: Duo 35
Median €8.370 · 5 cleaned observations · €3.000–€8.370
Recent sales (Pfeiffer Duo)
- €818Aug 6, 2026Pfeiffer Vacuum DUO 2.5 Pump, Pl D41 011C, 110Vac, Pk 194 413, Unuse, Ger 7200
- €557Aug 6, 2026Pfeiffer Vacuum DUO 2.5 Vacuum Pump,PL D41 011C,110Vac,PK 194 413,Unuse,Gr~7200
- €1.860Aug 6, 2026Pfeiffer DUO 11 Vacuum Pump PK D590 010 F0 , 2000249751
- €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-
- €858Aug 6, 2026Pfeiffer Duo 2.5 PK D41 064 E Vacuum Pump Max: 2.9m³/h 3000/min Used
- €654Aug 6, 2026Pfeiffer Duo 2.5 PK D41 064F Vacuum Pump
- €665Aug 6, 2026Pfeiffer DUO 2.5 PK D41 064F Agilent G3170-80026 Vacuum Pump 220-240V Used
- €675Aug 6, 2026Pfeiffer DUO 2.5 PK D41 064F Agilent G3170-80026 Vacuum Pump 3600 RPM Used
- €1.072Aug 6, 2026Pfeiffer DUO 030 A Vacuum Pump 30m³/h + AEG AM 90 SX4 Q4 1.1kW 1390/1660RPM Used
- €733Aug 6, 2026Pfeiffer Vacuum Pump DUO 11 / PK D59 721 C / 0.25-0.3 kW
- €642Aug 6, 2026Pfeiffer Vacuum DUO 2.5 PK D41 712 C Vacuum Pump Vacuum Pump 0.15kW 2.9m³/h -used
Source: eBay sold listings (Apify aggregation). Year inferred from listing title when present.
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.