UL 144:9ED 2021-01
Current
The latest, up-to-date edition.
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English - French, English, French
01-22-2021
This revision of ANSI/CAN/UL 144 dated August 26, 2021 has been issued to include the following changes in requirements: – Requirements for regulators with under-pressure shut off (UPSO) protection; 6.8.1, Section 18A, Section 32A – Revisions regarding maximum inlet pressure rating for a second-stage or two psig service regulators; 7.2, 21.3, Table 27.1, 28.2.8, 31.3, Table 32.2, 44.1
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