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Dräger Positive Pressure Unit Regeneration Systems

Dräger Positive Pressure Unit

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Dräger Positive Pressure Unit

The Dräger Positive Pressure Unit (PPU) brings a new level of safety to underground mine refuges. Fitted inside a refuge chamber, the PPU maintains positive pressure and consequently, a safe breathable atmosphere at all times during emergency operation.

Service and Training Network

Dräger Service and Dräger Training operate nationwide to provide full support for all your equipment and training requirements.

PPU 3000

The PPU 3000 uses constant flow technology to protect personnel by providing positive pressure to stop the ingress of contaminants into the chamber. It dilutes and flushes out any toxic gases that build-up inside the refuge chamber.

PPU 7000

The PPU 7000 is the most advanced variant in the range. It builds on the functionality of the PPU 5000 but incorporates a Dräger Polytron 5000 gas detector and controller. This intelligent solution automatically monitors and releases breathing air when the concentration of CO is too high or when the pressure drops below a set value.

Tested and Certified

Dräger’s patented PPU technology has been independently tested and certified by a world leading inspection company - SGS.

Cylinders required for Dräger Refuge Chambers

Product Number of cylinders required RCM0400 2 RCM0600 2 RCM0800 4 RCM1200 4 RCM1600 4 RCM2000 4 RCM3000 6

Industry Requirement

Positive pressure in refuge chambers is a requirement of the West Australian Department of Mines and Petroleum Guideline (2013) – Refuge Chambers in Underground Mines.

PPU 5000

The PPU 5000 efficiently and automatically maintains a positive pressure inside the chamber for a minimum of 36 hours. Compressed breathing air is released to create positive pressure. For added safety, the unit is designed with an additional two levels of redundancy.

Retrofit your existing Refuge Chamber

The PPU can be installed into all refuge solutions. For an evaluation and quotation, contact Dräger so we can develop an engineered solution that meets your requirements.

Technical Information

PPU 3000 PPU 5000 PPU 7000 Dimensions (W x H x D) mm 450 x 354 x 150 580 x 280 x 300 580 x 280 x 300 Air release technology Constant flow - Manual Pressure Switch - Automatic Pressure Switch - Automatic CO Dilution Manual Manual Fully Automatic Supply pressure (bar) 345 bar max 345 bar max 345 bar max Supply connection ¼”BSPP or ¼”NPT ¼”BSPP or ¼”NPT ¼”BSPP or ¼”NPT Maximum flow (L/min) 100 Manual mode: 100 l/min Manual mode: 100 l/min

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Positive Pressure Unit Product Information, en
Positive Pressure Unit Product Information, en

The Dräger Positive Pressure Unit (PPU) brings a new level of safety to underground mine refuges. Fitted inside a refuge chamber, the PPU maintains positive pressure and consequently, a safe breathable atmosphere at all times during emergency operation.

Download

Product information: Dräger Positive Pressure Unit (PDF)
Product information: Dräger Positive Pressure Unit (PDF)

The Dräger Positive Pressure Unit (PPU) brings a new level of safety to underground mine refuges. Fitted inside a refuge chamber, the PPU maintains positive pressure and consequently, a safe breathable atmosphere at all times during emergency operation.

Download

Get in touch with Dräger

Contact Us Image Safety Products

Draeger Australia Pty. Ltd.

​8 Acacia Place
Notting Hill
Victoria 3168

1800 372 437

Draeger New Zealand Ltd.

​Unit 4
24 Bishop Dunn Place
East Tamaki
Auckland 2013

0800 372 437