Special Chambers

Custom designed and fabricated UHV chambers and complete vacuum systems for a wide range of applications.



Prevac are a world leader in the design and production of analytical and deposit scientific and research equipment. Their systems operate in a high and ultra high vacuum environment. They design and construct UHV and HV systems fully adapted to the individual requirements of research projects and industrial applications.

Key Features

  • Custom Designed
  • Wide range of applications
  • Manufactured to your exact specifications


The choice of materials and the basic design of any vacuum chamber are as varied as the individual applications for which they are required. The demands on ultimate chamber base pressures for example can vary in range even better than 10-10 mbar.

Physical dimensions may be anything from a few millimeters to several metres in diameter. A simple experiment may dictate a simple configuration, such as a four way cross. A sophisticated, versatile analysis chamber on the other hand may require fifty or more of ports angled towards many different internal focal points and at many different levels.

We manufacture custom vacuum chambers to your exact specifications. We can work with your drawings or else create the full 3D design drawings from your instructions. Our team of highly trained engineering staff use the very latest CAD techniques chamber and system design alike.

We have invested significantly in the latest machining and finishing technologies and can construct large or small chambers with any number of ports positioned in different angles and suitable for any operating base pressure requirement.

We can machine, weld and join all types of HV and UHV compatible materials including: stainless steel, OFHC copper, bronze, macor, ceramic, teflon, titanium, aluminium, molybdenum, tantalum, mu-metal, vespel and inconel. We also fabricate heat shields and reflectors from tantalum, molybdenum and stainless steel.

Service Support

Comprehensive repairs and servicing

Annual Support Programs

Your metrology instrumentation is a major investment that is critical to your business operation and success. In today’s competitive climate, it is more important than ever to extend the functionality and peak performance of your metrology equipment years beyond the expiration of your factory warranty. CN Tech’s Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.

With over 20 years’ experience servicing and repairing you can be assured that your system is in safe hands. The independent services we offer include system relocation, maintenance visits, parts and consumables, and break down interventions.

CN Tech’s Support Programs are an economical way to guarantee optimal working condition:

  • Annual Preventive Maintenance
  • Priority Technical Assistance
  • Preferred Parts Availability
  • On-Site User Training
  • Remote Diagnostics
  • No surprise repair expense and much more!

Support Contact Example

An example of our service and support contracts are shown below:


Metrology & Instrumentation Annual Support Programs 2022/23

CN Tech's Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.

Get in touch to discuss your requirements

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