Reference Source

UL 312

For UL 312, laboratory is UL LLC; standard title is Check Valves for Fire-Protection Service, verified against its source on 2026-08-10.

Laboratory
UL LLC verified
Standard number
UL 312 verified
Standard title
Check 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 312 | Check 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.