NB-18, Pressure Relief Device Certification

• Foreward / Explanation


• National Board Pressure Relief Device Certification Administrative Requirements 


• Determination of Certified Relieving Capacities


• Searchable NB-18 is an always up to date web application for use in finding manufacturers, assemblers and device information and includes a listing of the following:
  • Assembler and Manufacturer Certifications
  • Certified Device Types by Manufacturer


• A listing of VR and T/O Certificate Holders can be found in the Manufacturer & Repair Directory


• Click HERE for a listing of Rupture Disk Combination Capacity Factors (CCF’s) by Valve Manufacturer

DOWNLOAD OPTION:

To download NB-18 to your computer, open the searchable NB-18, filter the NB-18 however you wish and click the "Generate Report from Grid" button.

NOTE: This electronic version of Pressure Relief Device Certifications is produced under the copyright of The National Board of Boiler and Pressure Vessel Inspectors. It may be downloaded and printed for professional reference only. This product is not to be reproduced for the purpose of commercial distribution.