Respiratory Protection Systems
Positive-Pressure Respiratory Protection Systems
Powered, supplied-air, welding and self-contained breathing systems selected around your workplace hazard, application and required level of protection.
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Powered Air
Filtered air from battery powered blower
Supplied Air
Air from external source through airline
Welding Protection
Integrated welding helmet with respiratory protection
Self-Contained Air
Breathing air from cylinder for IDLH environments
Respirator Selection Guide
Answer six questions about your atmosphere, hazard and task. We will identify the system category suited to your application and the head protection typically paired with it.
Indicated System Category
Typically Specified
Your Responses
This output indicates a system category only. Final selection must follow a documented hazard and risk assessment of your specific workplace, including contaminant identification, exposure measurement and oxygen concentration.
Get this recommendation reviewed by our respiratory specialists
We will send your selection summary and arrange an application assessment for your site.
Compare Systems
Air source, oxygen dependency, IDLH suitability and mobility across the four system categories.
| Consideration | PAPR | Supplied Air | Adflo Welding PAPR | SCBA |
|---|---|---|---|---|
| Air Source | Filtered workplace air | Remote compressed air | Filtered workplace air | Wearer-carried cylinder |
| Depends on Ambient Oxygen | Yes | No (subject to system design) | Yes | No |
| Suitable for IDLH | No | Only with approved system | No | Yes (subject to selection) |
| Mobility | High | Restricted by airline | High | High (limited by cylinder) |
| Typical Use | Dust, fumes, vapors | Long-duration / process work | Welding, grinding, fabrication | Emergency, firefighting, confined space |
| Key Head Protection | S-533L / M-306 / 6800 | S-533L / M-306 / 6800 | Speedglas G5-01 / G5-03 | Scott Full Face Mask |
Table scrolls horizontally on smaller screens. Selection must be based on a documented hazard and risk assessment.
What Is Positive Pressure?
Positive pressure respiratory systems deliver clean, breathable air to the wearer so that the pressure inside the facepiece, hood or helmet is higher than the surrounding atmosphere. This outward pressure helps reduce the inward leakage of contaminated air and can also reduce the breathing effort.
Powered Air (PAPR)
Ambient air is drawn through filters by a blower and delivered to the headtop.
Supplied Air (SAR)
Clean air is provided from a remote source through a filter panel, regulator and airline.
Self-Contained (SCBA)
Breathing air is carried in a cylinder and delivered through a demand valve to the facepiece.
PAPR systems are not suitable for oxygen-deficient or IDLH atmospheres. Selection must be based on a proper hazard and risk assessment.
Understanding APF
APF (Assigned Protection Factor) indicates the level of protection a respirator is expected to provide when properly selected, used and maintained.
| Respirator Category | Typical APF* (OSHA Framework) |
|---|---|
| Half-mask negative pressure | 10 |
| Full-face negative pressure | 50 |
| Loose-fitting hood/helmet PAPR | 25 |
| Tight-fitting full-face PAPR | Up to 1,000+ |
| Supplied-air (loose-fitting hood/helmet) | 25 |
| Supplied-air (full facepiece) | 50 |
| Pressure-demand supplied-air (full face) | 1,000 |
| Pressure-demand SCBA (full face) | 10,000 |
APF Calculation
Maximum Use Concentration
APF × Exposure Limit
Note: Never exceed IDLH limits, oxygen deficiencies or manufacturer limitations.
*Values may vary depending on jurisdiction, configuration and approval.
Our 3M Respiratory Solutions
Systems supplied and supported by Kewalson as an authorised distributor.
Powered Air-Purifying Respirators (PAPR)
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- TR-315E with S-533L Hood / M-306
- TR-619E with S-533L Hood / M-306
- TR-819E (Intrinsically Safe) with S-533L Hood / M-306
Supplied-Air Respirator System
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- W-2806 Filter Panel
- V-300DA Air Regulating Valve
- With S-533L / M-306 / 6800 Full Facepiece
3M Speedglas Adflo Welding Systems
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- G5-01 VC / G5-01NC
- G5-03
- Integrated welding and respiratory protection
Scott SCBA System
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- Scott Sigma 2 Type 2 Backplate
- Scott Full Face Mask
- Scott Composite Cylinder
Industries We Serve
Automotive
Paint, welding, grinding, adhesives, maintenance
Heavy Engineering
Welding, fabrication, foundry, maintenance, shutdowns
Pharmaceutical
Powder handling, high potency, cleaning, potential explosive dust environments
Oil & Gas
Hazardous area, maintenance, chemical handling, emergency response
Chemicals
Chemical handling, gases, vapors, reactor maintenance, decontamination
Every application is unique. Let our experts assess your environment.
Book Site VisitOur Services
Site Survey & Assessment
Application assessment and system recommendation for your environment.
Product Demonstration
On-site demonstration of systems with your team, in your conditions.
Fit Testing & Training
Fit testing and breathing-air quality checks per applicable standards.
Maintenance & Support
After-sales service, servicing schedules and system support.
Spare Parts & Consumables
Filters, hoods, visors and consumables held for supported systems.
Standards & Compliance
Our solutions comply with international standards and approvals.
- EN 12941 / EN 12942Powered filtering devices
- EN 14594Continuous flow supplied-air respirators
- EN 137Self-contained breathing apparatus
- NIOSH Approved SystemsWhere applicable
- Fit Testing & Breathing-Air QualityPer applicable standards
Why Kewalson?
- 3M Authorised Distributor
- Wide Range of 3M Respiratory Solutions
- Application Assessment & System Recommendation
- On-site Demonstration & Training
- After-sales Service & Support
Enquire Now
Tell us about your application and our experts will get in touch.
- Serving industrial, infrastructure and government clients since 1974
- Delhi headquarters with branches in Chandigarh, Gurgaon, Jaipur and Haridwar
- Application assessment, demonstration and training delivered on site
