ANSI/CAN/UL 793-20 Automatically operated roof vents for smoke and heat
Publication Year
2020
Document Status
Current
Abstract
Specifies minimum requirements for safety valves, categorized as pressure-relief valves, safety relief valves and hydrostatic relief valves for anhydrous ammonia and liquefied petroleum gas (LP-gas).
Publisher Information
Underwriters Laboratories
Established in 1894 as the Underwriters' Electrical Bureau, UL is a global safety consulting and certification company, approved to perform safety testing by the U.S. federal agency of Occupational Safety and Health Administration.
