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Compact Demand Valve (CDV)

  • 1st breath activated for “instant on”
  • Rugged, compact design delivers high flow rates
  • Screw-on-design allows for DIN 40 thread

Gauge & Whistle

  • Located on shoulder straps for easy access
  • Positioned for high noise environments and easy gauge reading
  • Illuminated gauge for low-light situations

Stealth Appearance

  • Black low profile design
  • Lightweight compared to traditional SCBA units
  • Silent operation for critical missions


  • Ergonomically contoured backframe for comfort
  • Adjustable harness allows for quick donning / doffing
  • Padded shoulder straps for comfort


  • CE Type-Examination conducted by BSI. The system has been certified to the requirements of the PPE directive 89/686/EEC (certificate number CE 564330)
  • The Avon ST53 SCBA carries a NIOSH Industrial Approval under the provisions of 42 CFR 84 TC-13F in a variety of cylinder and facepiece size combinations.