Bauer Compressors Junior II
Specifications
- Max pressure
- 5,000 psi (330 bar)
- Cooling
- air, splash lubrication, air-cooled intermediate and after-coolers
- Moisture handling
- P21 (or later P0 Triplex) purification system with integrated oil/water separator and pressure-retention check valve, DIN EN 12021 breathing-air compliant when properly maintained; TÜV-approved final pressure safety valve; patented B-TIMER monitors filter cartridge life without needing external power
- Auto-stop
- Yes
- Duty cycle
- designed for filling individual SCUBA/SCBA cylinders one at a time; explicitly not designed or intended for filling cascade storage systems of any kind
- Vessel guidance
- High-volume individual tank filling; the brand-recognition and resale-value leader in the dive-grade tier
- Also sold as
- Bauer Jr II, Bauer Jr., JRII
Where to buy
Prices captured 2026-07-06; follow the link for current pricing and stock.
About Bauer Compressors
Bauer is the industrial benchmark in high-pressure breathing air, and the Junior II is its compact entry unit that airgunners with serious budgets have adopted for decades of service. More than 100,000 Junior II units have sold worldwide per Bauer's own figures, making it the best-selling portable breathing-air compressor on the market. It carries the strongest brand recognition and resale value of the dive-grade tier, backed by the widest dealer network in the US, though the base unit ships without a power cord, hour meter, or switch box, all sold as options that push the real price well above the sticker.
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Open my locker →Specifications come from manufacturer pages and named retailer listings; blanks mean a value wasn't published, not that it's zero. Fill-time figures are derived estimates, not lab measurements. Always follow the manufacturer's fill and duty-cycle guidance.