UL-1091 › Standard for Butterfly Valves for Fire-Protection Service

UL-1091 - CHANGE 05/10 - CURRENT
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Included in this current edition are the following subparts:

 CHANGE 05/10 - May 12, 2010
 7TH EDITION - April 20, 2022


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Document Number

UL-1091

Revision Level

CHANGE 05/10

Status

Current

Publication Date

May 12, 2010