Reference Source

UL 668

What is the laboratory for UL 668?

For UL 668, laboratory is UL LLC; standard title is Hose Valves For Fire Protection Service, verified against its source on 2026-09-17.

UL 668 | Hose Valves For Fire Protection Service |

— osha.gov, retrieved 2026-08-10

Laboratory
UL LLC
Standard number
UL 668 verified
Standard title
Hose Valves For Fire Protection Service verified
Sourceosha.gov
Verified
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DatasetWhich OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

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