# Purged/Pressurized — Certification marks and hazardous-area classifications: cross-market equivalences

For Purged/Pressurized, stated equivalent is Ex p (Ex px, Ex py, Ex pz); meaning is Maintain positive pressure with inert gas; governing standard / law is IEC 60079-2, verified against its source on 2026-08-11.

- **Designation:** Purged/Pressurized _(verified: appears in the quote below)_
- **Stated equivalent:** Ex p (Ex px, Ex py, Ex pz) _(verified: appears in the quote below)_
- **Meaning:** Maintain positive pressure with inert gas _(verified: appears in the quote below)_
- **Governing standard / law:** IEC 60079-2 _(verified: appears in the quote below)_

## What the source says

> Purged/Pressurized | Ex p (Ex px, Ex py, Ex pz) | IEC 60079-2 | Maintain positive pressure with inert gas

## Source

- https://exknowledge.com/pages/nec-500-vs-atex-iec.html

Last verified: 2026-08-11. Review by: 2027-08-11.
Part of [Certification marks and hazardous-area classifications: cross-market equivalences](https://referencesource.org/certification-standards-equivalence/).