Expo Technologies is the market leader in the supply of Purge & Pressurization systems into the global market. Expo products are certified and approved to international standards like ISO 9001, IECEx, cULus, FM, ATEX, CE, INMETRO, Kosha safety etc. for world wide applications.
Purge and Pressurization for Large Rotating Machines (Motors & Generators)
Purge & Pressurization is the ideal technique for large volume/ high power motors. Expo Technologies has the widest range of purge flow systems, from 1000 Nl/min to 14000 Nl/min (35 scfm to 495 scfm) and covering applications from -50 deg C to +60 Deg C. Expo Technologies also offer worldwide approvals like ATEX, IECEx etc. Any alternative technique (like Ex-proof Ex d, Ex e) is either prohibitively expensive or very difficult to achieve to the level required for Zone 1 or Division 1 installations. Certification & approval is straightforward for the complete assembly, conducted with Expo technologies assistance or directly through your preferred approval agency.
Purge and Pressurization for Enclosures
Expo offers following range of enclosures which can apply different types of protection.
- Pressurized Enclosures (Ex p)
- Increased Safety (Ex e)
- Restricted Breathing (Ex nR)
- Dust protected (Ex tb)
Purge & Pressurization is a method of protection used in hazardous locations to insure that the interior of an electrical enclosure is free of flammable gases, vapors and dusts or the concentration of these hazardous elements is at a safe level. Expo’s complete Purge and Pressurized enclosures enable you to install uncertified electrical equipment in hazardous areas. Applications can include analyzers, computers, monitors, printers, barcoding systems, data recorders, instrumentation and electrical panels. In addition Expo Technologies can offers a variety of pre-designed, custom or OEM style systems to meet many unique and difficult applications.
Purge and Pressurization for Rooms
The RP-Max-Z range of room pressurizing units are designed for type Z (Ex pz) pressurized rooms in accordance with NFPA 496 and ATEX EN 60079-13. At the heart of each system is Expo’s control logic which provides for pressure monitoring and air inlet fan control. The main benefits are full de-classification of the area inside the room, allowing the use of standard industrial equipment. Access for personnel via doors without airlocks or isolation of the power supply means continuous operation of equipment. Expo’s system integrates with your local Fire & Gas system, enhancing safety on detection of gas or fire.
Options available are Single door system with 3000 m3/hr (1800 scfm) ventilation capacity, Dual door system with 5100 m3/hr (3000 scfm) ventilation capacity, high filtration unit for deserts including sand trap, SS version for corrosive environments and inlet stacks to draw air from classified areas.