Pepperl+Fuchs Blog

Why Use a Purge and Pressurization System?

Posted by ISC Sales on Mon, Apr 22, 2019

bebco purge units

Specialized protective equipment has to be used in environments that contain gases, vapors, combustible dusts, and fibers to prevent these materials from catching fire or exploding. Purge and pressurization systems help control these explosion hazards by segregating the electrical equipment inside of an enclosure from the surrounding potentially explosive atmosphere. An economical alternative to heavy and expensive explosion-proof enclosures, purge and pressurization systems pressurize enclosures with clean, dry compressed air or inert gas so hazardous gas or dust cannot get in.

Benefits of Using a Purge and Pressurization System

  • Allows standard enclosures with general-purpose equipment to be placed in hazardous locations
  • Eliminates the need for heavy cast explosion-proof enclosures
  • Cost-effective solution compared to other protection methods
  • Protects multiple enclosures with one purge unit
  • Easy to install and integrate into existing enclosures
Common Industries
  • Oil and gas production
  • Chemical and petrochemical
  • Pharmaceutical
  • Water and wastewater
  • Power
  • Flavors and fragrances
  • Offshore and shipbuilding
  • Food and beverage
  • Paint and coatings
  • Farming and handling
  • Packaging
  • Textile and cotton mills
Factors to Consider before Purchasing a Purge and Pressurization System
  • Classification of the area—Classification of the area is very important because it dictates the type of purge and pressurization system needed to protect the enclosure.
  • Equipment rating—Evaluating which purge system to use in a specific application depends on the rating and temperature specification of the equipment inside the enclosure. This information helps determine which functions of control and monitoring the system will need.
  • Enclosure size—You must know the size and design of the enclosure to determine the mounting method and whether multiple enclosures will be needed.
  • Power requirement—Fully automatic purge systems require power, so it is necessary to evaluate the voltage and contact ratings required. In addition, certain area classifications require systems that shut off enclosure power in the event of system or pressure failure. 

Using the proper equipment to protect electrical cabinets increases the safety of employees, helps prevent damage to property, and decreases the chance of profit loss caused by explosions and fires in production processes.

ISC Sales provides industrial products to end-users and original equipment manufacturers. Learn more about ISC SALES



Topics: Purge/ Pressurization Systems

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