Luxfer aluminium 40cf tank with din/k valve

Luxfer 40cf Tank

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The Luxfer 5.7L (40cft) Aluminium cylinder is one of the most commonly used Cylinders in Technical & Recreational and Diving as decompression stage cylinders, bailout cylinders and redundant gas supply stage cylinders.

This cylinder comes with a working pressure of 207bar (3000+psi) which is slightly negative in saltwater when full and when empty, a positive buoyancy by over 1kg. This cylinder is not 100% oxygen service ready but can be cleaned for oxygen use when purchased.

This cylinder can be purchased with either a DIN/K Valve or un-valved depending on users preference. 


  • Working Pressure 207bar
  • 5.7L internal volume
  • Cylinder neck thread 3/4 NPSM
  • Saltwater buoyancy; FULL: -0.3kg HALF: 0.4kg EMPTY: 1.1kg
  • Length 629mm
  • Diameter 133mm