Spare Air 300PK Package
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In stock — ships from Irvine, CA
This item is currently on backorder. Order now to reserve yours, and we will ship it as soon as it is back in stock.
Spare Air 300PK Package is backordered and will ship as soon as it is back in stock.
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Product Information
The Spare Air Model 300 Package (300PK) is a completely redundant miniature SCUBA system for recreational divers, holding 3 cu ft (85 liters) of air at 3000 psi (207 bar), which the manufacturer rates at about 57 surface breaths, in a black anodized aluminum cylinder that weighs just 2.2 lb (1 kg). Spare Air describes it as the smallest redundant SCUBA system available, and the 300PK ships as a complete kit with holster, safety leash and refill adapter.
Who it is for
This is the package for recreational open-water divers who want an independent ascent air source rather than relying on buddy breathing or an octopus. Because the whole unit is small, hands-free and nearly neutrally buoyant, it rides on a BC without getting in the way, so it suits reef, wreck and training dives where a diver wants a simple backup that works on demand. Spare Air calls the Model 300 the preferred choice of recreational divers.
Key details
- Cylinder capacity 3 cu ft / 85 liters; water capacity 30 cu in / 0.5 liters.
- Service pressure 3000 psi / 207 bar.
- 13" / 33 cm long, 2.5" / 6.4 cm diameter, 2.2 lb / 1 kg.
- Balanced single-stage, breathe-on-demand regulator with no complicated instructions.
- Black anodized aluminum cylinder; Made in the USA.
- Refills in seconds from any full SCUBA tank with the included patented refill adapter.
- Dial gauge / pressure indicator is sold separately.
What's in the box
- Spare Air Model 300 cylinder with breathe-on-demand balanced single-stage regulator
- Holster with quick-disconnect straps and mouthpiece cover
- Safety leash
- Refill adapter
- Printed owner's manual
DiveCatalog.com is an authorized Spare Air dealer and a real dive shop in Irvine, California since 2003. Call 888-701-4017 or start a chat if you have questions about mounting the holster on your BC or refilling from your own tank.
- Complete 300PK package includes the Spare Air Model 300 cylinder, holster, safety leash, refill adapter and printed owner's manual.
- 3 cu ft of air (85 liters) at 3000 psi / 207 bar service pressure, rated by Spare Air at about 57 surface breaths based on 1.5 liters per breath.
- Fully redundant system that works as a stand-alone backup, described by the manufacturer as faster than buddy breathing and easier than an octopus.
- Breathe-on-demand regulator of balanced single-stage design, with no complicated instructions to follow in an emergency.
- Only 2.2 lb / 1 kg and nearly neutrally buoyant, so it stays small and hands-free on a dive.
- Compact profile at 13" / 33 cm long and 2.5" / 6.4 cm in diameter so it stays low-profile and hands-free on a dive.
- Refills in seconds from any full SCUBA tank using the included patented refill adapter.
- BC mounting with the included holster, quick-disconnect straps, mouthpiece cover and safety leash.
- Black anodized aluminum cylinder for a durable finish.
- Made in the USA by Spare Air.
- Dial gauge / pressure indicator sold separately for monitoring cylinder pressure.
| Part Number | 300PK |
| Model | Spare Air Model 300 Package |
| Cylinder Capacity | 3 cu ft / 85 liters |
| Water Capacity | 30 cu in / 0.5 liters |
| Service Pressure | 3000 psi / 207 bar |
| Surface Breaths | 57 (based on 1.5 liters per breath) |
| Length | 13" / 33 cm |
| Diameter | 2.5" / 6.4 cm |
| Weight | 2.2 lb / 1 kg |
| Cylinder Material | Aluminum, black anodized |
| Regulator Type | Balanced single stage, breathe-on-demand |
| Refill Method | From any full SCUBA tank with included refill adapter |
| Mounting | Included holster with quick-disconnect straps and safety leash |
| Pressure Indicator | Dial gauge sold separately |
| Manufactured | Made in USA |
- Spare Air Model 300 cylinder with breathe-on-demand, balanced single-stage regulator
- Holster with quick-disconnect straps and mouthpiece cover
- Safety leash
- Refill adapter
- Printed owner's manual
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
How much air does the Spare Air 300PK hold and how many breaths is that?
The Model 300 cylinder holds 3 cu ft (85 liters) of air at 3000 psi (207 bar). Spare Air rates that at approximately 57 surface breaths, calculated at 1.5 liters per breath. Breaths available at depth are fewer than at the surface because air is consumed faster under pressure, so the system is intended to help a recreational diver reach the surface in an emergency.
How do you refill a Spare Air 300?
The 300PK includes Spare Air's patented refill adapter, which lets you top off the unit in seconds from any full SCUBA tank. The included patented refill adapter lets you top off the unit from any full SCUBA tank. The cylinder's service pressure is 3000 psi / 207 bar.
How does the Spare Air 300PK attach to my BC?
The package includes a holster with quick-disconnect straps and a mouthpiece cover, plus a safety leash, so the unit mounts directly to a BC. At 13" / 33 cm long, 2.5" / 6.4 cm in diameter and 2.2 lb / 1 kg, it stays low-profile, hands-free and nearly neutrally buoyant while you dive.
Is there a Nitrox version of the Spare Air Model 300?
Yes. Spare Air publishes two versions of the Model 300: the standard air model, which is what this 300PK package is, and a Nitrox-ready Model 300 rated for use up to 40% EAN. If you dive Nitrox and want a matching redundant source, contact DiveCatalog at 888-701-4017 and we will point you to the correct version.
