Product Description
Stokes 607 Vertical gas flow — Mechanical-seal bare shaft
New 607 mechanical booster • Part 900-607-MVR
The Stokes 607 6-inch mechanical booster is a rugged industrial Roots booster available with mechanical-seal or process-isolation arrangements and horizontal or vertical gas flow.
Features
- Bare-shaft and direct-drive configurations
- Horizontal or vertical gas-flow orientation
- Mechanical-seal and five-seal process-isolation arrangements
- Large sight glass and magnetic drain plugs simplify maintenance
Performance Graph

The graph is a VPS presentation of published Edwards family data. Confirm operating point, backing-pump capacity, process gas and motor selection before ordering.
Technical Specifications
| Specification | Value |
|---|---|
| Model | 607 |
| Part number | 900-607-MVR |
| Selected configuration | Stokes 607 Vertical gas flow — Mechanical-seal bare shaft |
| Nominal displacement | 1,040 m³/h at 1,800 rpm; 1,589 at 2,750 rpm; 1,733 at 3,000 rpm; 2,080 at 3,600 rpm |
| Maximum pressure differential | 506 mbar (380 Torr) |
| Inlet connection | ASA/ANSI 6" |
| Outlet connection | ASA/ANSI 6" |
| Motor / drive | Application and drive dependent; 7.5 kW / 10 hp typical at 50 Hz |
| Cooling | Air cooled for bare-shaft mechanical-seal versions |
| Sound level | 65–85 dB(A), configuration dependent |
| Typical weight | Approx. 475 lb (215 kg) bare shaft |
| Typical dimensions | Verify orientation-specific drawing before installation |
| Lubricant capacity | 1.9 L horizontal flow; 4.1 L vertical flow |
Available Configurations
| Part number | Configuration | Electrical / drive | Gas flow | Availability |
|---|---|---|---|---|
| 900-607-MVR | Stokes 607 Vertical gas flow — Mechanical-seal bare shaft | Bare shaft; select compatible motor and drive | Vertical gas flow | This configuration |
| 900-607-MHR | Stokes 607 Horizontal gas flow — Mechanical-seal bare shaft | Bare shaft; select compatible motor and drive | Horizontal gas flow | Call for Pricing |
| 900-607-5VR | Stokes 607 Vertical gas flow — Process-isolation bare shaft | Bare shaft; select compatible motor and drive | Vertical gas flow | Call for Pricing |
| 900-607-5HR | Stokes 607 Horizontal gas flow — Process-isolation bare shaft | Bare shaft; select compatible motor and drive | Horizontal gas flow | Call for Pricing |
Maintenance, Oil & Repair Kits
| Item | Guidance |
|---|---|
| Lubricant | Stokes V-Lube H or approved equivalent. |
| VPS service kit | Stokes 607/615 clockwise repair kit 424096002CW |
| Service note | Confirm rotation, horizontal/vertical flow orientation and seal arrangement before selecting a kit. |
Applications
Mechanical boosters are used to increase pumping speed and reduce pump-down time in industrial vacuum systems. Typical duties include heat treatment, metallurgy, vacuum coating, chemical processing, steel degassing, vacuum drying and large chamber evacuation. Final performance depends on the backing pump and system conductance.
VPS Resources
Need help sizing the booster system?
Send the required pumping speed, pressure range, backing pump, process gas, voltage, frequency, gas-flow orientation and seal requirements. VPS will help confirm the correct part number.