ASME Marks

ASME CERTIFICATES OF AUTHORIZATION
{A, M, PP, S, E, H, HLW, U, UM, U2, U3, PRT and T}

Certificates

Power Boilers
Section I

  • S - Power Boilers
  • A - Assembly of Power Boilers
  • E - Electric Boilers
  • M - Miniature Boiler
  • PP - Pressure Piping
  • V - Boiler Pressure Relief Valves
  • PRT - Parts Fabrication

Heating Boilers
Section IV

  • H - Heating Boilers/Cast Iron Sectional Heating Boiler
  • HLW - Lined Potable Water Heaters
  • HV - Heating Boiler Safety Valves
  • PRT - Parts Fabrication

Pressure Vessels
Section VIII Division 1

  • U - Pressure Vessels
  • UM - Miniature Pressure Vessels
  • UV - Pressure Vessel Pressure Relief Valves
  • UD - Pressure Vessel Pressure Relief Devices
  • PRT - Parts Fabrication

Pressure Vessels
Section VIII Division 2

  • U2 - Pressure Vessels (Alternative Rules for Pressure Vessels)

Pressure Vessels
Section VIII Division 3

  • U3 - High Pressure Vessels
  • UV3 - High Pressure Vessel Pressure Relief Valves
  • UD3 - High Pressure Vessel Pressure Relief Devices

Reinforced Plastic Vessels
Section X

  • RP - Fiber-Reinforced Plastic Vessels

Transports Tank
Section XII

  • T - Transport Tanks
  • TV - Transport Tanks Pressure Relief Valves
  • TD - Transport Tanks Pressure Relief Devices
  • PRT - Parts Fabrication

Learn more: Boiler and Pressure Vessel Certification.

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