STPAPR | PAPR | CBRN Protection

  • header STPAPR

ST PAPR – The total respiratory protection system

This Powered Air-Purifying Respirator (PAPR) has been designed to add even greater flexibility to Avon’s revolutionary FM53™ mask and is available as an optional extra with the ST53 and ST53SD.

The addition of the STPAPR provides the additional levels of serviceability and comfort associated with powered air while still retaining the ability to switch instantly to the positive pressure SCBA mode when required. The STPAPR achieves this by utilising a Compact Demand Valve (CDV) fitted directly into the STPAPR.

The STPAPR is NIOSH certified with industrial protection under 42 CFR 84 with the FM53 and the combination cartridge, part number 033018, for protection against chlorobenzylidene malononitrile, chloroacetophenone, ammonia, chlorine, sulfur dioxide and particulates at a high efficiency level (CS/CN/ AM/CL/SD/HE).


Ease of Use

  • Easy to reach remote on/off switch
  • Integrated CDV for easy switch of operational modes
  • Enables SCBA to convert to Combination Respirator Unit (CRU)
STPAPR comfort


  • Adjustable carrier system
  • Chest strap for back wear
  • Side mount hose into the facemask

Air Management

  • High flow rate up to 130 Liters/Min
  • Minimum 7 hour battery life
STPAPR filtration


  • 40mm STANAG filter interface
  • Accepts traditional and conformal filters
  • Utilizes two filters for maximum flow rates
Maximum Flow Rate
Positive Pressure Mode:

Maximum Flow Rate
Negative Pressure Mode:

Power and run time: LiSO2 Battery - 8 hours
Working Temperature: -30oC to + 60oC
Decontamination: Dispose of filters by following user's manual procedures
Expected working life of Blower:
10 years
Dimensions: 10 5/8 x 6 1/4 x 4 1/4
Weight (STPAPR w/ Harness & Filters):
3.62 kg
Operational Noise: Sound level tested per
EN 12942, CL 6.12 and test per CL 7.16
Blower Noise 60/65 dBA
Connections: Mask - 40mm STANAG
Hose -Rectus Series 25 Male Plug
Hose Length: 28"
Mounting Options: Backpack Carrier
Cylinder Straps for ST53 SCBA

Combo Carrier for ST53 SD
Filter approved with: GPCF50
Materials Used: Noryl


  • Article 10 Type-Examination approval for CE marking (certificate number CE 569540)
  • The Avon STPAPR carries a NIOSH Industrial Approval under the provisions of 42 CFR 84 TC-23C.