Edwards · E2M
Edwards E2M28 — two-stage rotary vane, 28 m³/h
Original title: Edwards E2M28 Two-Stage Rotary Vane Vacuum Pump | P/N: A373-24-904 |
Market median (sold): €902 from 10 sales in this family
📍 USA
🟢 Good fit
Excellent match for FD440 and FD440 MAX freeze dryers; well-specified.
Condition from photo
Exterior clean, no visible oil leaks, labels intact, mounted on white base frame, appears well-maintained.
Likely refurb / add-ons
- Oil change and filter service (~€110)
- Gas-ballast service (~€60)
- Soft-starter retrofit (~€280)
WAVE AI estimate from photo + specs only — not a substitute for our physical pre-purchase check.
Specifications
- Type
- Oil-sealed rotary vane
- Pumping speed
- ~28 m³/h
- Water-vapour tolerance
- ~180 g/h
- Ultimate vacuum
- ≤ 0.001 mbar
- Source
- eBay
- Listing #
- eBay #236387666341
- Last verified
- Jun 12, 2026
Fits WAVE machines: FD440, FD440 MAX
Price history— Edwards E2M
Median €899 · 1028 observations · €130–€34.195
Recent sales (Edwards E2M)
- €884May 22, 2026Edwards 30 E2M30 Rotary Vane Vacuum Pump 220V #18208
- €930May 22, 2026Edwards E2M28 E2 M28 28 Agilent Rotary Vane Vacuum Pump dual stage
- €920May 19, 2026EDWARDS E2M40 40 2 STAGE HIGH VACUUM PUMP "No Tariffs"
- €791May 15, 2026Edwards E2M28 Dual Stage Rotary Vane Vacuum Pump 220-240v oil warranty M28 28 qs
- €1.116May 7, 2026Edwards E2M28 Dual Stage Rotary Vane Vacuum Pump
- €530May 7, 2026Edwards E2M28 Rotary Vane Vacuum Pump – Dual Stage, High Capacity
- €10.695May 6, 2026Edwards E2M 80 Two Stage Rotary Vacuum Pump w/ Mechanical Booster Model: EH 1200
Source: eBay sold listings (Apify aggregation). Year inferred from listing title when present.
Type plate (AI reading)
- Exact model
- E2M28
- Serial
- 066459117
- Model
- E2M28
- Code No.
- A373-24-904
- Weight
- 44 kg
- Serial No.
- 066459117
- IP Rating
- IP 44
- Insulation Class
- F
- Ambient Temperature
- 40°C
- Capacitor 1
- P-50 µF 250 V
- Capacitor 2
- 11-500 µF 125 V
- Voltage (100 V)
- 50 Hz 1450 RPM 0.75 kW 0.8 PF 8 A
- Voltage (100–105 V)
- 60 Hz 1750 RPM 0.8 kW 0.8 PF 8 A
- Voltage (200 V)
- 50 Hz 1450 RPM 0.75 kW 0.8 PF 6.5 A
- Voltage (200–210 V)
- 60 Hz 1750 RPM 0.8 kW 0.8 PF 6.5 A
- Approvals
- IEC34-1, UL 1004, CE 06
- Origin
- Made in England by Edwards High Vacuum Int (part of S.O.C. L
Auto-extracted from one of the listing photos. Verify on the real unit before purchase.
What to look for on this family
Industrial two-stage oil-sealed. Gas-ballast standard. Older but extremely reliable — look for original spec plate, motor type and recent service log.
Manufacturer datasheet — Edwards E2M
- Bauart
- Industrielle zweistufige ölgedichtete Drehschieberpumpe
- Saugvermögen (50 Hz)
- 18 / 28 / 40 / 80 / 160 / 275 m³/h
- Enddruck
- ≤ 7.5 × 10⁻⁴ mbar
- Wasserdampfverträglichkeit
- sehr hoch (mit Gasballast)
- Ölsorte
- Edwards Ultragrade 19/20
- Hersteller
- Edwards Vacuum
Curated from the manufacturer's official datasheet for this family / model. The specific pump may vary slightly by variant.