The RPB hot air tube (part 4000-20) warms the supplied breathing air going into your RPB Nova 3 blast helmet by up to 30°F (17°C). It clips to a webbed belt, and the airflow regulator lets the operator dial in the temperature, so cold-weather blasting stays comfortable from the first hour to the last.
Hot air tube RPB # 4000-20. Fits Nova 3 helmet respirators. Have the ability to heat the incoming breathable air in your helmet by as much as 30 degrees Fahrenheit with this heat tube. Great for those cool mornings or our blasters in the north!
How it Works:
The assembly uses the incoming compressed air and directs it through a tube, warming it before it reaches the respirator helmet, making it more comfortable for the user.
- Warms Breathing Air: Heats incoming compressed air for respirator users.
- Enhances Comfort: Vital for workers in cold climates, preventing icy air from hitting the face.
- Adjustable: Includes a lever or airflow regulator to control the warmth level.
- Durable: Constructed from robust, non-toxic engineering plastics.
- Easy Maintenance: Can be disassembled for cleaning, with replaceable components.
Wanna switch between hot and cold? Try a C40 dual climate control device.
OEM#:
- 4000-20
Blue Dog Blasting SKU#:
- RPB-4000-20
Want it as a complete kit? The RPB Nova 3 blast helmet is available with the hot air tube already included (NV3-704-50).
RPB Hot Air Tube vs. Cool Air Tube vs. C40
| RPB Hot Air Tube | RPB Cool Air Tube | RPB C40 Dual Climate Control | |
|---|---|---|---|
| Part # | 4000-20 | 4000-01 | C40 |
| Function | Warms air up to 30°F (17°C) | Cools air up to 32°F (18°C) | Heats or cools in one unit |
| Best for | Winter and cold-climate blasting | Summer, hot shops and blast rooms | Year-round crews and changing conditions |
| Price | $215.87 | $182.63 | $526.81 |
All three work with the RPB Nova 3 blast helmet.
RPB Hot Air Tube Specifications
| Part number | RPB 4000-20 |
| Temperature change | Up to 30°F / 17°C warmer |
| Adjustment | Airflow regulator |
| Mounting | Webbed belt |
| Material | Non-toxic engineering plastic |
| Service | Disassembles for cleaning; all parts replaceable |
| Compatible helmet | RPB Nova 3 |
Frequently Asked Questions
How much does the RPB hot air tube warm the air?
Up to 30°F (17°C) above your supply air temperature. The airflow regulator sets exactly how warm.
Which helmet does the RPB hot air tube fit?
The RPB Nova 3.
Should I get the RPB hot air tube or the C40?
If you only blast in the cold, the hot air tube costs less. If your crew works through both summer and winter, the C40 heats and cools in one unit.
Can I clean or rebuild it?
Yes. It comes apart for cleaning, and every part is replaceable.
Is the hot air tube NIOSH approved?
NIOSH certifies the complete respirator assembly, not individual parts. Use the tube only as part of an approved RPB Nova assembly.
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