Used Vacuum Pumps›Edwards›Other
Edwards · Other
Edwards Speedivac EO2 — oil diffusion pump, vapour
Original title: Edwards Speedivac Vapour Diffusion Pump EO2 Rig w/ Pressure Gauge
📍 United Kingdom
Suitability for 1 × FD440
Not verifiedItem type
Not confirmed
Technical
Cannot calculate
Condition
Not evidenced
Data
Family only
🔴 Check carefully
Diffusion pump unsuitable for WAVE freeze dryers; requires backing pump.
Condition from photo
Frame and plumbing intact, gauge readable, exterior clean. Internal wear cannot be assessed from photos.
Likely refurb / add-ons
- Backing pump (rotary vane, 2–5 m³/h): €200–400
- Oil and filter service: €80–120
- Soft-starter or controller: €150–300
Watch out for
- Diffusion pump alone cannot reach WAVE vacuum spec without a backing pump.
- No visible backing pump or controller in the rig photos.
- Requires continuous oil circulation and cooling; high operational cost.
WAVE AI estimate from photo + specs only — not a substitute for our physical pre-purchase check.
Specifications
- Type
- other
- Source
- eBay
- Listing #
- eBay #267430283406
- Last verified
- Aug 5, 2026
The Other family is recognised, but the exact variant is not supported. Model-specific performance and water-vapour figures from Other Edwards are therefore withheld.
Price history— Edwards Other
Family: OtherExact model is not supported by the listing or type plate.
Median €2.552 · 827 cleaned observations · €300–€15.345
Type plate (AI reading)
- Exact model
- Speedivac-Gauge Model B5
- Manufacturer
- Edwards High Vacuum Ltd.
- Gauge Type
- Speedivac-Gauge Model B5
- Range
- 760–0.001 torr
Auto-extracted from one of the listing photos. Verify on the real unit before purchase.
What to look for on this family
Generic Edwards vacuum pump — the exact model family was not detected automatically. Suitability remains unverified until the model or type plate is clear.
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.