Reference Source

UL 1091

For UL 1091, laboratory is UL LLC; standard title is Butterfly Valves for Fire Protection Service, verified against its source on 2026-08-10.

Laboratory
UL LLC verified
Standard number
UL 1091 verified
Standard title
Butterfly Valves for Fire Protection Service verified
Sourceosha.gov
Verified
Review by
DatasetWhich OSHA NRTL is recognized for which test standard: all 21 labs' scopes of recognition, cross-referenced

What the source says

UL 1091 | Butterfly Valves for Fire Protection Service |

— osha.gov, retrieved 2026-08-10

Source

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.