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Pressure Relief Devices

Print Date: 4/28/2017 2:53:22 PM

The National Board’s goal is to maintain the integrity of the National Board marks and symbols (NB, VR, and T/O) and the ASME Certification mark with V ,UV, UD, HV, and NV designators. By doing so, we make it possible for National Board members to rely on the presence of these marks in their efforts to protect the general public.

National Board Activities

ASME Supporting Activities

Committee Participation

The National Board supports the following technical committees:


For more information regarding the National Board Pressure Relief Department,
please Contact Us.