Package Includes:

  • SPARE AIR breathe on demand, balanced single stage regulator
  • 3.0 cu.ft. Black Anodized Aluminum CYLINDER
  • 910S REFILL ADAPTER - Fills off SCUBA tank
  • 973 COVERED HOLSTER - Mounts to BC
  • 961 LEASH - Prevents loss

Product Specifications:


Part Number  300PK
Product Length 13.4" [34 cm]
Product Diameter  2.25" [5.7 cm]
Product Weight(full) 2.2 lbs [.98 kg]
Cylinder Pressure Ratings  3000 PSI [207 BAR]
Cylinder Volume  3 cu ft [85 liters]
Cylinder Material  Aluminum - Black Anodized
Pressure Relief  Integrated in regulator 
Regulator Type  Balanced Single Stage 
Operational Temperature  -22°F [-30°C]
+158°F [+70°C] 
Duration of Air Supply  Approximately 57 breaths at surface


Buy life support equipment made by professionals!  Submersible Systems, original inventors and manufacturers of the patented Spare Air, have been in business for over 40 years and sold over 300,000 units. Spare Air & Heed units are made in the USA.

Spare Air, 3.0 cu. ft. Package

SKU: 300PK00327910S