Spare Air 300PK-N Package (Nitrox)

Name: Spare Air 300PK-N Package (Nitrox)
Brand: Spare Air
SKU: 300PK-N
Price: 319.99 USD
Availability: OutOfStock

Spare Air | SKU: 300PK-N

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Product Information

The Spare Air 300PK-N Package (Nitrox) is a compact backup air system built for Nitrox divers who want a hands-free emergency air source rated for 3 cu ft (85 liters) at 3000 psi (207 bar) service pressure, refillable in seconds from the diver's own Nitrox SCUBA tank. The aluminum cylinder carries a durable black anodized finish and a clearly marked NITROX label so it is never mistaken for a standard-air unit.

Who it is for

This package suits recreational divers who already dive Nitrox and want a small, nearly neutrally buoyant reserve air supply they can wear without added bulk. Because it is Nitrox ready up to 40% EAN, it is built specifically for divers who fill their primary tanks with enriched air and want a backup system that matches that gas, rather than a standard-air-only unit.

Key details

Cylinder capacity: 3 cu ft / 85 liters
Service pressure: 3000 psi / 207 bar
Weight: 2.2 lb / 1 kg
Regulator type: balanced single stage
Surface breaths: 57, based on 1.5 liters per breath
Nitrox compatibility: ready up to 40% EAN
Max depth: 33 meters for model 300/300-N

Compatibility and sizing

The 300PK-N refills from any full Nitrox SCUBA tank or air compressor (up to 40% EAN) using the included patented refill adapter. It mounts to a BC using the included holster with two quick-release straps, and a pressure indicator dial gauge can be added separately to monitor remaining air.

What's in the box

3 cu ft Spare Air Nitrox cylinder
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 dive shop based in Irvine, California since 2003. Call or chat with us if you have questions about fit, holster mounting, or Nitrox compatibility before you buy.

⚠️ 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

Can the Spare Air 300PK-N be refilled with Nitrox?

Yes. The 300PK-N is Nitrox ready up to 40% EAN and refills in seconds from any full Nitrox SCUBA tank or air compressor using the included patented refill adapter. This makes it a matched backup for divers running enriched air on their primary tank.

What is the difference between the Spare Air 300 and the 300PK-N Nitrox package?

The 300PK-N is the Nitrox-ready version, carrying a clearly marked NITROX label and rated for refills up to 40% EAN.

What comes included with the Spare Air 300PK-N package?

The package includes the 3 cu ft Spare Air Nitrox cylinder, a holster with quick disconnect straps and mouthpiece cover, a safety leash, a refill adapter, and a printed owner's manual. A pressure indicator dial gauge is available separately.

How many breaths does the Spare Air 300PK-N provide?

It delivers 57 surface breaths, calculated at 1.5 liters per breath, from its 3 cu ft / 85 liter cylinder at 3000 psi service pressure. This is intended as emergency reserve air, not a primary air source, for an ascent to the surface.

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Part Number	300PK-N
Cylinder Capacity	3 cu ft / 85 liters
Service Pressure	3000 psi / 207 bar
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)
Nitrox Compatibility	Nitrox ready up to 40% EAN
Max Depth	33 meters for model #300/300-N
Manufactured	Made in USA