RPB PX4 PAPR Complete Unit

Part no. HAPX403901G

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The RPB PX4 AIR PAPR is an air purifying respirator designed for optimum safety, portability and comfort for welding and painting operators who work in harsh environments.

The unit provides clean breathing air to the operator in a downward draft down their face to ensure clean, uninterrupted airflow, while simultaneously providing a relieving flow of cool air down the face of the operator.

It’s designed to meet the highest safety standards. It’s built to be extremely durable and is compatible with any of RPB safety respirators, including the Nova 3, Nova 2000, T-Link, T100, and Z-Link respirators.


The PX4 AIR PAPR is typically used in welding and painting operations to provide clean airflow for RPB Safety Industry Respirator. It boasts a portable design that allows the operator to move about the work site freely.


  • Meets NIOSH, CE, AND AS/NZS certified safety requirements
  • Quiet, efficient, multi-speed fan
  • Highly efficient filter cartridge for maximum air filtration
  • Lightweight build of 2.5 lbs (1.13 kg)
  • Ergonomic design to fit the contours of lower back
  • Audible and vibrating alarm when airflow dips below minimum requirements
  • LED lit control interface to communicate fan speed, battery life, and warnings
  • Long-lasting, lightweight, rechargeable lithium battery
  • Electronic calibration to ensure optimum airflow


PX4 AIR PAPR Components


Item No. Description Part No. Mfg Part No.
1. PX4 Cover HAPX403922 03-922
2. PX4 Pre filter (Packet of 10) HAPX403981 03-981
3. PX4 Spark Arrestor HAPX403982 03-982
4. PX4 Main Door HAPX403921 03-921
5. PX4 High Efficiency Filter HAPX403985 03-985
6. PX4 Latch Kit HAPX403923 03-923
7. PX4 Fan Housing HAPX403911 03-911
8. PX4 Battery HAPX403955 03-955
9. PX4 Belt Loop Kit HAPX403924 03-924
10. PX4 Belt Supports (Pair) HAPX403965 03-965
11. PX4 2" Belt and Nylon Buckle HAPX407765 07-765
  PX4 2" Nomex Belt and Acetyl Buckle HAPX407765FR 07-765-FR
12. PX4 Air Breathing Tube & Hose Clip (T100, Z100) HAPX404836 04-836
  PX4 Air Breathing Tube (Nova 3) HAPX404838 04-838
  PX4 Air Breathing Tube (Z3, T150) HAPX404839 04-839
  PX4 Air Breathing Tube (Z-LINK) HAPX404835 04-835
13. PX4 Air Flow Meter HAPX404091 04-091
14. PX4 Battery Charger HAPX403951 03-951
15. AC Power Cable APCMB9021 09-021
16. 24 Volt Power Supply with Power Cord HANVZ952 03-952
17. PX4 Battery Charger and Power Supply Kit HAPX403950 03-950