Used Vacuum Pumps›Leybold›Trivac D
Leybold · Trivac D
Leybold Trivac D40B & RUvac WSU251 — rotary vane, 40 m³/h
Original title: Leybold Trivac D40B & RUvac WSU251 Vacuum System Lab
Market median (sold): €1.116 from 36 sales in this family
📍 USA
Suitability for 1 × FD440
Not verifiedItem type
Not confirmed
Technical
Requirements met
Condition
Not evidenced
Data
Type plate + model
🟢 Good fit
Excellent match for FD440/FD440 MAX; dual-pump system exceeds requirements.
Condition from photo
Clean exterior, mounted on frame with motor and control box; no visible oil leaks or damage.
Likely refurb / add-ons
- Oil change & filter service (~€120)
- Exhaust filter replacement (~€80)
- Soft-starter inspection (~€60)
WAVE AI estimate from photo + specs only — not a substitute for our physical pre-purchase check.
Specifications
- Type
- Oil-sealed rotary vane
- Pumping speed
- ~40 m³/h
- Water-vapour tolerance
- ~250 g/h
- Ultimate vacuum
- ≤ 0.002 mbar
- Year
- 1991 (per nameplate)
- Source
- eBay
- Listing #
- eBay #205843671678
- Last verified
- Aug 7, 2026
Fits WAVE machines: FD440, FD440 MAX
Source: official manufacturer · product page: product family · EN · link checked Aug 5, 2026
Price history— Leybold Trivac D
Exact model: TRIVAC D40B
Median €5.359 · 31 cleaned observations · €4.185–€5.884
Recent sales (Leybold Trivac D)
- €3.189Aug 6, 2026NEW OERLIKON LEYBOLD Trivac NT25 Rotary Vane Pump Vacuum Pump PN '140331'
- €3.534Aug 6, 2026Leybold Ruvac Vacuum Pump 106119-000 With 1.5 Hp Motor & Trivac Pump D60AC 2HP
- €1.186Aug 6, 2026Leybold S30A vacuum pump depressurization device Trivac S 30A Eintufi
- €4.635Aug 6, 2026Leybold D16B Dot Trivac Vacuum Pump 11406
- €2.977Aug 6, 2026Leybold D16BCS Trivac Vacuum Pump Rotary Valve Eexe Used
- €1.208Aug 6, 2026Leybold 898020 Trivac D8A Rotary Pallet Vacuum Pump
- €1.196Aug 6, 2026Leybold S30A vacuum pump depressurization device Trivac S 30A Eintufi
- €708Aug 6, 2026Leybold Trivac D4A Vacuum Pump + Motor Ameb 71 FY4R3N1 50/60Hz Used
- €614Aug 6, 2026Leybold Vacuum 140000 TRIVAC D2.5 Rotary Pallet Vacuum Pump
- €2.952Aug 6, 2026Leybold D16BCS Trivac Vacuum Pump Rotary Valve Eexe Used
- €714Aug 6, 2026Leybold Trivac D4A Vacuum Pump + Motor Ameb 71 FY4R3N1 50/60Hz Used
- €541Aug 6, 2026LEYBOLD Trivac S4A vacuum pump rotary pallet pump
Source: eBay sold listings (Apify aggregation). Year inferred from listing title when present.
Type plate (AI reading)
- Exact model
- WSU251 / D-40 B
- Serial
- L91120017G
- Year (plate)
- 1991
- Model No.
- WSU251
- Catalog No.
- 91723-1
- Serial No.
- L91120017G
- Pump Fluid
- HE200
- Manufacturer
- Leybold Vacuum Products Inc
- Origin
- Made in USA
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. Make sure the model code ends in 'B' (= B-Variant with built-in gas-ballast valve). Check oil sight glass and that the exhaust filter is clean.
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.