Reference Source

UL 1091

What is the laboratory for UL 1091?

For UL 1091, laboratory is UL LLC; standard title is Butterfly Valves for Fire Protection Service, verified against its source on 2026-09-17.

UL 1091 | Butterfly Valves for Fire Protection Service |

— osha.gov, retrieved 2026-08-10

Laboratory
UL LLC
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

Source

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

More on standards, certification and testing

All 9 datasets on this subject · Look something up