CERTIFICATIONS & QUALIFICATIONS
DOCUMENT INFORMATION
SCOPE INFORMATION
Henghua Valve Co., Ltd., with the acceptable abbreviation HHSV, is authorized by The National Board of Boiler and Pressure Vessel Inspectors to use the "NB" mark in accordance with NB-501, National Board Certification of Pressure Relief Devices.
The authorization is limited to National Board certified devices that have been manufactured, assembled and marked in accordance with the construction codes applicable to the UV designator.
Issue date: April 10, 2025
Expiration date: April 07, 2028
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