skip to navigation

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.

Sign up

We’ll send you interesting Sampling news, events and stories. Just drop us your email below.

Follow us on

Request information

Please fill in this form to contact us for sales, support or general inquiries. Thank you.







We respect your information and will never sell or pass on your email to 3rd parties. Please read our privacy policy.

It has come to Luxfer’s attention that a fraudulent website named ‘Luxfer.US’ has been established. This is not a Luxfer owned domain and none of its content has been generated by Luxfer. Within this fraudulent website, people have been encouraged to apply for an open Executive Assistant position, and this position DOES NOT EXIST. Luxfer is actively taking action to have this web-site taken down. We apologize any inconvenience this may have caused any innocent parties caught up in this fraudulent activity. ×