PROMAX 720R WITH R50 PAPR RESPIRATOR SYSTEM WELDCLASS
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Weldclass PROMAX 720R Welding Helmet with PAPR Respirator
The Weldclass PROMAX 720R is an auto-darkening welding helmet with a battery-powered air-purifying respirator (PAPR). It gives you eye, face and breathing protection in one system. A TH3/P3-class particle filter removes at least 99.8% of welding fume particles. A flip-up cassette opens to a clear grinding visor, so you don’t need to take the helmet off between welding and grinding. The R30 blower runs up to 10 hours on one charge. The helmet complies with AS/NZS 1337.1 and AS/NZS 1338.1, and the respirator with AS/NZS 1716. It suits MIG, TIG (down to 5 A), stick, plasma cutting, gouging and grinding.
Why choose a PAPR welding helmet?
Australia is moving from Workplace Exposure Standards to Workplace Exposure Limits for welding fume. Under that change, employers need to show they’re controlling the fume their welders actually breathe. Source-capture extraction should be your first line of defence. A PAPR helmet adds personal protection, especially in jobs where extraction is hard to set up, like on-site fabrication, enclosed work, maintenance and repair.
Unlike a disposable mask under a helmet, the PROMAX 720R pushes filtered air across the face from inside the helmet. That means:
- Positive pressure. Filtered air flows outward, which helps stop fume getting in around the face seal.
- A cooler, more comfortable welder. Steady airflow cuts heat build-up and fogging on long shifts.
- One protection system. Your eyes, face and breathing are covered by one certified unit, with no strap clash between a mask and helmet.
Helmet features
- Flip-up grinding visor. Lift the auto-darkening cassette to reveal a wide clear visor for grinding and prep, without taking off the respirator.
- V2-rated optics (1/1/1/2) with improved colour recognition in a 110 × 60 mm landscape view (66 cm²).
- Variable welding shade 9–13 and cutting shade 4–8, plus a Shade Lock that fixes the lens anywhere from shade 4 to 13.
- Digital controls on the outside of the helmet. Store up to 9 settings and save instantly without taking the helmet off.
- Gradient mode. The lens returns from dark to light gradually, which is easier on the eyes in high-cycle work.
- Magnification-ready. The lens holder takes standard magnification (cheater) lenses.
- Solar assist with replaceable CR2450 batteries and low-power electronics.
Respirator features
- 3-stage filtration: spark filter, prefilter and TH3 main particle filter
- Three airflow settings: 170, 200 or 230 L/min
- Audio, visual and vibration alarms when the filter needs changing or the airflow is restricted
- 4-point waist and shoulder harness with a removable shoulder strap
- Hose with flame-resistant cover
What’s in the box
- PROMAX 720R PAPR helmet
- PROMAX R30 PAPR blower unit with battery
- Battery charger
- Waist and shoulder belt/harness
- Hose with flame-resistant cover
- Clear lens starter pack
- Airflow meter/tester
- Heavy-duty carry bag
Technical specifications
Helmet
| Specification | PROMAX 720R |
|---|---|
| Viewing area | 110 × 60 mm (66 cm²) |
| Optical class | V2 (1/1/1/2) |
| Welding shade | 9–13 variable |
| Cutting shade | 4–8 variable |
| Shade Lock | Shade 4–13 |
| Sensitivity | 0–9 |
| Delay (dark to light) | 0.04–2.0 s |
| Memory | Up to 9 settings |
| Grinding mode | Flip-up clear grinding visor |
| Power | Replaceable CR2450 batteries + solar assist |
| Weight (helmet only) | 890 g |
| Weight (helmet + respirator + hose) | 2.14 kg |
| Standards | AS/NZS 1337.1, AS/NZS 1338.1 |
Respirator
| Specification | PROMAX R30 PAPR |
|---|---|
| Filtration | 3-stage (spark filter, prefilter, TH3 main filter) |
| Filter class | TH3 (particulate) |
| Air purity | ≥ 99.8% |
| Airflow settings | 170 / 200 / 230 L/min |
| Battery life | ≥ 10 h @ 170 L/min · ≥ 8 h @ 200 L/min · ≥ 6 h @ 230 L/min |
| Battery type | Li-ion, rechargeable |
| Alarms | Audio, visual and vibration |
| Weight (blower + hose) | 1.25 kg |
| Standard | AS/NZS 1716 |
Warranty
| Component | Warranty |
|---|---|
| Helmet | 2 years standard |
| Auto-darkening lens/cassette | Extended to 7 years when registered with Weldclass |
| Respirator blower | 2 years |
| Battery | 1 year |
Spare parts and consumables
| Item | Part No. |
|---|---|
| PROMAX R30 PAPR main particle filter | W06792 |
| PROMAX R30 PAPR prefilter (pack of 5) | W06793 |
| PROMAX R30 PAPR battery | W06795 |
| PROMAX R30 PAPR battery charger | W06798 |
| PROMAX 720R inner clear cover lens (pack of 5) | W06876 |
| PROMAX outer clear cover lens (pack of 5) | WC-05348 |
| PROMAX 720R clear grinding visor lens (pack of 5) | W06791 |
| PROMAX 720R/850R headgear | WC-06712 |
| Sweatband | WC-01630 |
Helmet lens batteries are standard CR2450 cells.
Compare the Weldclass PROMAX PAPR range
| PROMAX 720R | PROMAX 680R | PROMAX 850R | |
|---|---|---|---|
| Viewing area | 66 cm² | 95 cm² | 95 cm² |
| Optical class | V2 | V1 | V1 |
| Respirator | R30 | R50 | R50 |
| Spare battery included | No | Yes | Yes |
| Flip-up grinding visor | Yes | No | Yes |
| Best for | Value PAPR entry with grind-and-weld flexibility | Bigger view and top-rated optics | Premium all-day production welding |
Frequently asked questions
Does the PROMAX 720R protect against welding gases?
No. The TH3 main filter captures particles such as welding fume, smoke and solid or liquid aerosols. It doesn’t filter gases or vapours like ozone, carbon monoxide or nitrogen oxides. Where gases are a risk, use local exhaust ventilation alongside the PAPR.
How long does the PAPR battery last?
Up to 10 hours at the lowest airflow (170 L/min), about 8 hours at 200 L/min and about 6 hours at 230 L/min, with a new filter. That covers a standard shift on the low or medium setting.
Can I grind without taking the helmet off?
Yes. Flip up the auto-darkening cassette and you have a wide clear grinding visor. The respirator keeps running, so you stay protected from grinding dust as well as weld fume.
Is the PROMAX 720R compliant with Australian standards?
Yes. The helmet meets AS/NZS 1337.1 for impact protection and the auto-darkening lens meets AS/NZS 1338.1. The respirator complies with AS/NZS 1716 for respiratory protective devices.
Is the PROMAX 720R suitable for low-amp TIG welding?
Yes. Weldclass rates it for TIG welding down to 5 amps.
How often do I replace the filters?
It depends on how much fume you produce and how long the unit runs. The blower sounds an alarm, flashes and vibrates when airflow drops because the filter is clogged. Change prefilters regularly to extend the life of the main filter, and check airflow with the included tester before each shift.
Can I fit a magnifying lens?
Yes. The lens holder takes standard magnification lenses for close or fine-detail work.