PED vs API
PED vs API
(OP)
We have vendor from Europe who is having design and calculation of valves to API standards and equaly the seat leakage test done as per API Standards.
They are suggesting that the valves are Stamped and certified to PED and also bear the CE mark. But not the API mark.
Can somebody suggest the differences for the above
on the technical side in between the European and American norms; limitations if any in terms of PED norm valve put under evaluation when specs are based on the American standards.
Thanks
They are suggesting that the valves are Stamped and certified to PED and also bear the CE mark. But not the API mark.
Can somebody suggest the differences for the above
on the technical side in between the European and American norms; limitations if any in terms of PED norm valve put under evaluation when specs are based on the American standards.
Thanks





RE: PED vs API
If required, I can send you a copy of PED.
Henry
RE: PED vs API
PED is law, not a standard.
European standards are EN.
Even leakage in the seat of the valve is allowed in some cases by PED.
You can access PED and guidelines at http://
Regards from Barcelona
G. García
RE: PED vs API
One more question, as mentioned above, the design for valve from Europe which we are talking is based on API specs and leakage test is also to API as they confirm.
But than why is it that they are not having API mark.
(We found this case with more than one European manufacture
RE: PED vs API
An ASME or API inspector for this countries is not authorized to certify to local regulations. They would prefer designs to local standards too and now to european norms EN.
Regards from Barcelona
G. García
RE: PED vs API
You can mark to PED and API but you MUST mark to PED.
The PED requires markings to conform to a specific format.
The PED provides a series of Essentail Safety Requirements (Annex1) that must be met an a series of modules that define the standard of inspection and third party involvement.
You CANNOT CE mark a product if it falls outside the scope of the directive or if it falls under the limits of article 3 paragrah 3.
There is a CEN forum on this site that will provide losts of useful information on European Directives.
It would be worthwhile looking at the guidelines of the PED web site to determine how to categorise valves, of the top of my head they will propbably be safety accessories but I could be wrong, the categorisation, fluid and pressure determine the lowest category and hence the lowest module you can use for PED compliance.
WE have marked vessels for PED and ASME U Stamp before now but the markng is different and you MUST comply with the marking as specified in the directive (for example maximum allowable working pressure or design pressure is shown as PS not MAWP or DP)