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API 6A and ASME B16.34 Ratings and Marking

Thread starter marklobo
Start date Oct 25, 2005

Status: Not open for further replies.

Oct 25, 2005

marklobo

Mechanical

If a valve design is to be applied in either of two services (industrial or well head), with the difference being the approved materials, does marking imply compliance with the applicable specifications?

For example, CL1500 A696 valve implies B16.34, whereas 5000 MOP API 75K implies API 6A. Is marking a valve CL1500 API 75K acceptable, wrong, ambiguous or simply misleading?