Spare Air Model 300 Package Kit 3.0 cu ft w/ Free DiveCatalog's Safety Whistle
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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 Model 300 Package Kit 3.0 cu ft w/ Free DiveCatalog's Safety Whistle 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 Kit (Part #300PK) is a 3 cu ft / 85 liter redundant miniature scuba system that gives divers an independent backup air supply for a surface ascent in an emergency. It uses a breathe-on-demand balanced single-stage regulator, refills from a standard scuba tank with the included patented refill adapter, and is made in the USA.
Who it is for
This package suits recreational divers who want a compact, self-contained backup air source they can carry on a BC. The nearly neutrally buoyant unit stores in the included holster with quick-disconnect straps and a mouthpiece cover, and a safety leash keeps it attached to the diver during use.
Key details
- Cylinder capacity: 3 cu ft / 85 liters; water capacity: 30 cu in / 0.5 liters
- Service pressure: 3000 psi / 207 bar
- Weight: 2.2 lb / 1 kg; length 13" / 33 cm; diameter 2.5" / 6.4 cm
- Cylinder material: aluminum with a black anodized finish
- Regulator type: balanced single stage
- Surface breaths: 57 (based on 1.5 liters per breath)
Compatibility and sizing
The included refill adapter is compatible with standard scuba tanks, and the holster is designed to be worn on a BC. A Nitrox-ready version, the Model 300-N, is offered for use with gas blends up to 40% EAN, and an optional dial gauge upgrade is available for all Spare Air models.
What's in the box
- 3 cu ft Spare Air unit
- Holster with quick-disconnect straps and mouthpiece cover
- Safety leash
- Refill adapter
- Printed owner's manual
- DiveCatalog orange whistle with lanyard (DiveCatalog add-on, not a manufacturer component)
DiveCatalog.com is an authorized Spare Air dealer and a dive shop in Irvine, California since 2003. Call or chat with us if you have questions about fit, refill compatibility, or sizing before you order.
- Redundant air supply. Functions as a completely redundant backup miniature scuba system for emergency ascents.
- Breathe-on-demand regulator. Uses a balanced single-stage regulator that delivers air on demand.
- Compact, low-profile carry. Nearly neutrally buoyant, compact design for hands-free carry on a BC.
- Fast refills. Refills from a standard scuba tank in seconds using the included patented refill adapter.
- Complete package. Includes the Spare Air unit, holster with quick-disconnect straps, safety leash, and refill adapter.
- Made in USA. The Spare Air Model 300 is manufactured in the United States.
- Aluminum cylinder. Cylinder material is aluminum with a black anodized finish.
- 57 surface breaths. Rated for 57 surface breaths based on 1.5 liters per breath.
- Gauge upgrade available. An optional dial gauge upgrade is available to monitor remaining pressure.
- Signaling add-on. Includes an orange DiveCatalog whistle with lanyard for surface signaling.
| Part Number | 300PK |
| Cylinder Capacity | 3 cu ft / 85 liters |
| Water Capacity | 30 cu in / 0.5 liters (manufacturer figure) |
| Service Pressure | 3000 psi / 207 bar |
| Length | 13" / 33 cm (manufacturer figure) |
| Diameter | 2.5" / 6.4 cm (manufacturer figure) |
| Weight | 2.2 lb / 1 kg |
| Cylinder Material | Aluminum, Black Anodized |
| Regulator Type | Balanced Single Stage |
| Surface Breaths | 57 (based on 1.5 liters per breath) |
- 3 cu ft Spare Air unit
- Holster with quick-disconnect straps and mouthpiece cover
- Safety leash
- Refill adapter
- Printed owner's manual
- DiveCatalog orange whistle with lanyard (DiveCatalog add-on)
⚠️ 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
Does the Spare Air Model 300 Package Kit include a pressure gauge?
No, the package kit does not include a pressure gauge. A dial gauge is offered as an optional upgrade for all Spare Air models, including the Model 300, so you can monitor remaining pressure separately if you choose to add one.
Can the Spare Air Model 300 be used with Nitrox?
The standard Model 300 is not listed as Nitrox-rated. Spare Air offers a dedicated Nitrox-ready variant, the Model 300-N, which is rated for use with gas blends up to 40% EAN, so divers planning Nitrox dives should look at that version instead.
How do you refill the Spare Air Model 300?
The Model 300 refills from any full standard scuba tank using the included patented refill adapter, which comes with the package kit.
What is included with the Spare Air Model 300 Package Kit?
The package includes the 3 cu ft Spare Air unit, a holster with quick-disconnect straps and mouthpiece cover, a safety leash, a refill adapter, and a printed owner's manual. DiveCatalog also adds an orange whistle with lanyard for surface signaling.
