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Typical markings for a permanent gas cylinder according to TPED

Cylinder markings


  1. 25E = Thread Specification - Important to ensure the correct valve is used with your cylinder.
  2. GB = Country of Manufacture
  3. LUXFER = Cylinder Manufacturer
  4. P3136Z ....= Cylinder Type Number and Serial Number - This number is recorded by Luxfer which means, if ever necessary, the entire manufacturing history of your cylinder can be traced.
  5. AA6061 T6 = Alloy of Construction
  6. 11,8MM = Design Minimum Wall Thickness.
  7. 12,4KG = Empty Weight of Cylinder Only (kg)
  8. 10L = Minimum Water Capacity (litres)
  9. PW200 BAR = (Working Pressure) - Shows the pressure that the cylinder should be filled to - this must not be exceeded.
  10. PH300 BAR = (Test Pressure) - Shows the pressure that the cylinder should be tested to - this must not be exceeded.
  11. p 0038 = The mark of Conformity and Notified Body reference number to the Transportable Pressure Equipment Directive 1999/36/EC.
  12. e2UK907 GB = Pattern Approval number according to Directive 84/526. Replaced by EN1975 when this specification is design basis. 
  13. [STAMP] = Stamp of Notified Body.
  14. 2002/09 = Year and Month of initial test.
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