Varian
V 70
Provisional entry — research in progress
This page was generated automatically from cited public sources and hasn't completed the full research pass yet. Every specification shown carries its source; more detail is added as research completes.
The Varian V 70 is a turbomolecular vacuum pump. The Varian V 70 is used for high and ultra-high vacuum applications. The Varian V 70 operates from a 54 Vac three-phase supply at 1250 Hz.[1][2]
What it is
The Varian V 70, also branded as the Turbo-V 70, is a turbomolecular vacuum pump designed for high and ultra-high vacuum applications. The pump is driven by a high-frequency motor and is available in multiple flange configurations, including ISO 63, ConFlat 4.5 inch, KF 40 NW, and ConFlat 2.75 inch variants.[3][1][2]
How it works
A turbomolecular pump operates using a high-speed rotor with bladed stages that impart momentum to gas molecules, directing them toward the exhaust. In the Turbo-V 70, the turbine rotor is supported by permanently lubricated ceramic ball bearings and is driven by a three-phase motor operating at 54 VAC and 1250 Hz during normal operation. The pump can operate in any orientation and relies on natural convection air cooling, with optional forced air or water cooling kits for heavy loads.[1][2]
What do the numbers mean?
Power & electrical4
Vacuum & pumping7
Control & software1
- With controller, no front panel display[3]
Configuration & options9
- Conflat flange 4.5"OD and 2.75" ID[3]
Vintage & configurations
Documented models & variants
| Designation | Generation | Vintage | Changes | Source |
|---|---|---|---|---|
| Turbo-V 70 | — | — | ISO 63 high-vacuum flange version. | pages.uoregon.edu[1] |
What does it need to run?
Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.
- Voltage120V, 50/60Hz[3]
- TypeTurbomolecular vacuum pump[1]
- ApplicationsHigh and ultra-high vacuum applications[1]
- Motor input54 Vac three-phase at 1250 Hz[1]
- Input power54 VAC, three phase, 1,250 Hz[2]
- High-vacuum flange versionsISO 63, ConFlat 4.5-inch OD, KF 40 NW, ConFlat 2.75-inch OD[1]
- Pumping speed with 4.5-inch CF or ISO 63N2: 68 l/s; He: 60 l/s; H2: 45 l/s[1]
- Pumping speed with 2.75-inch CF or KF 40 NWN2: 45 l/s; He: 50 l/s; H2: 41 l/s[1]
- Base pressure1 x 10^-9 mbar (8 x 10^-10 Torr)[1]
- Fore-vacuum connectionKF 16 NW flange[1]
- Input54 VAC, three phase, 1,250 Hz[2]
Where are the manuals?
Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.
Not publicly documented
Field notes
No research found yet — worked with this tool? Share what you know.
Frequently asked questions
What are the pumping speed specifications for the Turbo-V 70?
With a CF 4.5 inch or ISO 63 flange, the pumping speed is 68 l/s for N₂, 60 l/s for He, and 45 l/s for H₂. With a CF 2.75 inch or KF 40 NW flange, the speeds are 45 l/s for N₂, 50 l/s for He, and 41 l/s for H₂.[1][2]
What is the base pressure of the Turbo-V 70?
The ultimate base pressure is 1 × 10⁻⁹ mbar (8 × 10⁻¹⁰ Torr).[1][2]
What flange options are available for the Turbo-V 70?
The pump is offered with ISO 63, ConFlat 4.5 inch, KF 40 NW, and ConFlat 2.75 inch high-vacuum flanges. The foreline flange is KF 16 NW.[1][2]
What is the rotational speed and start-up time of the Turbo-V 70?
The rotational speed is 75,000 rpm and the start-up time is less than 60 seconds.[2]
What controller is required for the Turbo-V 70?
The pump must be used with a compatible Varian controller from the series 969-9405, 969-9505, 969-9507, or 969-9508.[1]
Not publicly documented
The following facts about the V 70 are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the V 70 are on record.
Answerable by: OEM historical records or a trade-press announcement
The control-system platform and OS era of the V 70 are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the V 70 are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the V 70 is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the V 70 are on record.
Answerable by: an OEM parts catalog or a service engineer
No research found yet — worked with this tool? Share what you know.
Sources & citations
Sources (3)Every fact above is drawn from these public sources
- [1]pages.uoregon.edu — pages.uoregon.edupages.uoregon.edu
- [2]ptbsales.com — ptbsales.comptbsales.com
- [3]inventory listing
Last updated Oct 10, 2026.
