Expo Technologies

Purge, Pressurization & Protection System

With more than 60 years’ experience and deep knowledge of hazardous area standards, Expo Technologies develops and delivers simple, robust, certified solutions that improve safety and save our customers time and cost. Expoworks with end-users, integrators, and OEMs across a wide range of industries, including oil & gas, chemical & petrochemical, pharmaceutical & biotechnology, and power generation.

We are experts in electrical protection by purge and pressurisation, having been involved from the very beginning and helping to write the first standards. Our purge and pressurisation systems provide protection to more than 9,000 large electric motors and generators and more than16,000 smaller systems, including at least 2,000 Expo-built pressurised enclosures.

Our products are certified and approved to national and international standards (IECEx, ATEX, cULus, cFMus, INMETRO, KOSHA, EAC).We have manufacturing centres in the UK, USA & China, and offer sales and service support through a global network of authorised channel partners.




  • Purge & Pressurization for Enclosures
  • Purge & Pressurization for Motors
  • Room Pressurization
  • Pneumatic Solenoid Friction-Free Values


  • Upstream Oil & Gas
  • Power Generation & Distribution
  • Chemical & Petrochemical Processing
  • Automation & Control
  • Water & Waste Water Treatment
  • Pharmaceutical Manufacturing
  • Analysers and OEM Systems