
ST54
Enhanced Multi-Mission Tactical Operator SCBA
ST54
Enhanced Multi-Mission Tactical Operator SCBA
Avon Protection's state-of-the-art ST54 Tactical Operator SCBA has been developed specifically for the tactical officer and technician applications where the operator needs to respond to ever changing operational conditions.
The ST54 SCBA is the base to a multi-mission Respiratory Protection System which provides for operational flexibility to the operator and mission commanders in the field to tailor the PPE response based on the available intelligence. Depending on the threat or operational situation at the scene of an incident, the ST54 SCBA can be configured to provide the appropriate protection.
The ST54 SCBA combines Avon Protection Systems’ M53A1, FM53 and FM54 respirators (see respirator datasheets for further details) with new and innovative modular breathing apparatus technology to provide positive pressure SCBA and/or PAPR capability. The ST54 system provides the operator with total flexibility to select the necessary level of protection quickly and efficiently without degradation of operational effectiveness. Designed with the tactical mission in mind, the system incorporates non-reflective black components and warning whistle, which can be silenced.
Suitable for:
- First Responders
- Military
- Special Forces

The ST54 SCBA is the base to a multi-mission Respiratory Protection System which provides for operational flexibility to the operator and mission commanders in the field to tailor the PPE response based on the available intelligence. Depending on the threat or operational situation at the scene of an incident, the ST54 SCBA can be configured to provide the appropriate protection.
The ST54 SCBA combines Avon Protection Systems’ M53A1, FM53 and FM54 respirators (see respirator datasheets for further details) with new and innovative modular breathing apparatus technology to provide positive pressure SCBA and/or PAPR capability. The ST54 system provides the operator with total flexibility to select the necessary level of protection quickly and efficiently without degradation of operational effectiveness. Designed with the tactical mission in mind, the system incorporates non-reflective black components and warning whistle, which can be silenced.
Features and Benefits
Hand Compact Demand Valve (H-CDV)
- 1st breath activated for “instant on”
- Rugged, compact design delivers high flow rates
- Screw-on design allows for DIN 40 thread
- Smallest on the market
Gauge & Whistle
- Integrated assembly; easy access
- Illuminated gauge for low-light situations in black or luminescent back grounds
Backframe
- Twin carrying and single drag handle for easy of mobility
- Ergonomically contoured for comfort- properly balances weight
- Lightweight for reduced fatigue
- Quick Disconnect buckles
Gauge & Whistle
- Integrated assembly; easy access
- Illuminated gauge for low-light situations in black or luminescent back grounds
Stealth Appearance
- Black low profile design
- Designed by special operations and LE forces
- Low pressure alarm can be disengaged
Technical Specifications
Breathing Performance SCBA Mode | |
---|---|
Breathing rate | 103 lpm |
Environmental range | -30 ° to +60 ° C |
End of cylinder air | Able to sustain positive pressure down to 10 Bar (145 psi) cylinder pressure |
Breathing Performance PAPR Mode | |
Breathing rate | 120-130 lpm |
Breathing Performance in APR Mode | |
Breathing resistance | Exhalation breathing resistance of no greater than 20mm of water at 85 lpm in a negative pressure mode |
Inhalation resistance including canister | 50mm of water at 85 lpm |
Materials Used | |
53/54 Series Masks | Chlorobutyl/silicone rubber and polyurethane visor |
Harness on ST54 SCBA | Kevlar webbing with stainless steel and nylon hardware |
Backplate | Glass reinforced polycarbonate |
Cylinder valve | Nickel-plated brass |
CS-PAPR | CBRN hardened butyl and PPE |
Requirements | Actual | |||
---|---|---|---|---|
Challenge chemical | Max Peak (mg/m3) | Max Cumulative (mg-min/m3) | Max Peak (mg/m3) | Max Cumulative (mg-min/m3) |
Sarin (GB) | 0.600 | 6 | 0.004 | 0.203 |
Mustard (HD) | 0.087 | 6 | 0.005 | 0.8 |
Test agent | NIOSH CBRN requirements | Typical performance | ||
Sarin (GB) | 6 Hours | > 6 Hours | ||
Mustard (HD) | 6 Hours | > 6 Hours |
Part Number | Pressure (psi) | Material | Free Air Capacity | NIOSH Rated Duration @ 40 lpm | Cylinder & Valve Charged Weight | Cylinder Diameter | Hydrostatic Interval |
---|---|---|---|---|---|---|---|
124053 | 4500 | Full wrapped carbon, black | 1274 liters | 30 min. | 11.0 lbs. | 5.4 in. | 5 years |
45 cu. ft. | |||||||
124054 | 1840 liters | 45 min. | 14.8 lbs. | 6.3 in. | |||
65 cu. ft. | |||||||
124055 | 2462 liters | 60 min. | 19.2 lbs. | 6.9 in. | |||
88 cu. ft. | |||||||
124028 | 4500 | Full wrapped carbon, neutral | 1274 liters | 30 min. | 11.0 lbs. | 5.4 in. | |
45 cu. ft. | |||||||
124029 | 1840 liters | 45 min. | 14.8 lbs. | 6.3 in. | |||
65 cu. ft. | |||||||
124030 | 2462 liters | 60 min. | 19.2 lbs. | 6.9 in. | |||
88 cu. ft. | |||||||
602318 | 5500 | Full wrapped carbon, black | 3113 liters | 70 min. | 20.4 lbs | 7.1 in. | |
110 cu. ft. |
The Avon ST54 SCBA carries a NIOSH Industrial Approval under the provisions of 42 CFR 84 TC-13F in a variety of cylinder and facepiece size combinations.