Viewport shutters
Safely protecting system windows during processes
Our viewport shutters provide ideal protection during processes such as vacuum deposition. This is because they come with a 100% full closure option.
Utilising the magnetically coupled MagiDrive rotary feedthroughs for shutter actuation, the range can be actuated manually or pneumatically (where remote control is required).
Key Specifications
- Available on CF38 to CF150 flanges
- Manual or pneumatic actuation
- Fully bakeable to 250°C
- Friction control system
- 100% full closure option
- Position switch option
100% full closure actuator
The VPSFC range of viewport shutters provides 100% protection against the coating of viewports in HV and UHV deposition applications. The range is available in either AutoClose, Pneumatic or Pneumatic with position-feedback options.
Pneumatic actuation
Viewport shutters can also be fitted with a pneumatically actuated MagiDrive. Used in their simplest form, they could be operated remotely from a control panel or switch. For more sophisticated protection, the pneumatically-actuated MagiDrive could be interlocked to the ‘vacuum process’. In this instance, for example, activating a deposition source would automatically close the viewport shutter. For critical applications, an optional ‘feedback-switch’ assembly can be fitted to the drive. This would confirm to the process controller that the shutter is in the closed position.
Product configuration tool
Technical Specification
| VIEW PORT SHUTTER SPECIFICATION | VPS38 | VPS64 | VPS100 | VPS150 |
| System mounting flange size (with clear holes) | CF38 (2¾" OD CF) | CF64 (4½" OD CF) | CF100 (6" OD CF) | CF150 (8" OD CF) |
| Blade aperture coverage (Standard) | 88.40% | 90.60% | 84.00% | 87.00% |
| Blade aperture coverage (Full Closure option) | 100% | 100% | 100% | 100% |
| Bakeout temperature | 250°C with pneumatic cylinder removed | |||
| Pneumatic option - cylinder sweep | set at 90 degrees (adjustable 30-170°) | |||
| Pneumatic option - cylinder switch | 5-24V 2 wire reed switch | |||
| Pneumatic option - max rotation speed | 0.5 seconds per 90o | 0.5 seconds per 90o | 1 second per 90o | 1 second per 90o |
If you would like to discuss your project with our engineering team, please contact us.