ST53
Versatile Protection For Tactical Operations
ST53
Versatile Protection For Tactical Operations
The ST53 combines Avon Protection's FM53 mask technology with an advanced modular breathing apparatus to provide positive pressure SCBA and/or PAPR capability for specialist operations.
Developed with the unknown elements of a threat scenario in mind, the ST53™ is the most advanced CBRN respiratory solution on the market. It enables a fast response to changing operational conditions in one complete modular system.
A switch between negative (filter) and positive (SCBA) pressure is achieved at the flick of a lever on the front of the mask. And by attaching a short or long duration compressed air cylinder, it is possible to enter a location on filter mode, assess the situation and change to SCBA mode if the need arises.
Suitable for:
- Military
- Special Forces
- First Responders
Developed with the unknown elements of a threat scenario in mind, the ST53™ is the most advanced CBRN respiratory solution on the market. It enables a fast response to changing operational conditions in one complete modular system.
A switch between negative (filter) and positive (SCBA) pressure is achieved at the flick of a lever on the front of the mask. And by attaching a short or long duration compressed air cylinder, it is possible to enter a location on filter mode, assess the situation and change to SCBA mode if the need arises.
Features and Benefits
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
Comfort
- Ergonomically contoured backframe for comfort
- Adjustable harness allows for quick donning / doffing
- Padded shoulder straps for comfort
Stealth Appearance
- Black low profile design
- Lightweight compared to traditional SCBA units
- Silent operation for critical missions
Technical Specifications
| Breathing performance in SCBA mode | |
|---|---|
| Breathing Rate | 103 liters per minute with mask pressure above ambient |
| Environmental range | The operating range is -30oC + 60oC |
| End of cylinder air | Able to sustain positive pressure down to 10 bar cylinder pressure |
| Breathing Performance in ST PAPR mode | |
| Breathing rate | 125 - 165 liters per minute |
| 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 General Purpose filter | 50 mm of water at 85 lpm |
| Materials used | |
| Harness on ST53 SCBA | Kevlar webbing with stainless steel nylon hardware |
| Harness on ST53SD SCBA | Nylon Cordura |
| Backplate | Glass reinforced polycarbonate |
| Cylinder valve | Anodized Aluminum |
| ST-PAPR | GE Noryl with a 10% glass fill |
| Unit/System | Weight (Based on empty cylinders) |
| ST53 (excluding cylinder and mask) | 6.6 lbs |
| Carbon fiber fully wrapped, 2216 psi, 30 minute | 7.75 lbs |
| Carbon fiber fully wrapped, 4500 psi, 30 minute | 7.4 lbs |
| Carbon fiber fully wrapped, 4500 psi, 45 minute | 9.9 lbs |
| Carbon fiber fully wrapped, 4500 psi, 60 minute | 11.95 lbs |
| ST-PAPR without CDV, battery or cartridges | 2.5 lbs |
| ST-PAPR without CDV, two general purpose filters and a lithium Sulphur Dioxide battery | 4.4 lbs |
| ST53SD 11 cu. ft (includes cylinder but no mask) | 5.2 lbs |
| ST53SD 17 cu. ft (includes cylinder but no mask) | 4.0 lbs |
| Single Port FM53 mask (excluding filter) | 1.2 lbs |
| Dual Port FM53 mask (excluding filter) | 1.3 lbs |
| Requirements | Actual | |||
|---|---|---|---|---|
| Challenge chemical | Max Peak (mg/m3) | Max Cumulative (mg-min/m3) | Max Peak (mg-m3) | Max Cumulative (mg-min/m3 ) |
| Sarin (GB) | 0.6 | 6 | 0.004 | 0.203 |
| Mustard (HD) | 0.087 | 6 | 0.005 | 0.8 |
| Test agent | NIOSH CBRN requirements | Typical performance | ||
| Mustard (HD) | 6 Hours | > 6 Hours | ||
| Sarin (GB) | 6 Hours | > 6 Hours | ||
| (Data validated by ECBC, Edgewood Chemical Biological Center) | ||||
Type-examination approval: PPE Regulation 2016/425/EU - Module B: Certificate CE 684849
The Avon Protection 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.
Resources and Downloads
Product Literature
Accessories
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