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Standard 1091, Edition 6

Standard for Butterfly Valves for Fire-Protection Service

UL Revision
Standard 1091, Edition 6 Edition Date: August 05, 2005 $254.00
Summary of Topics s1091_6_sum.html

Summary of Topics

The revisions to UL 1091 are being issued to:

Add Glossary, New Section 4A and Revise 5.1, 5.2, 6.1, 20.3, 21.2, 26.1, and Table 18.1 to Reference NPS or Nominal Pipe Size;

Add Guidelines for Conducting Operating Torque Value Calculations for Butterfly Valves to 20.6, and New Appendix A; and

Make Editorial Changes to Outside Standard References.

Back to Standard 1091, Edition 6

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