1、UL 2351ISBN 0-7629-0984-6Spray Nozzles for Fire-Protection ServiceCopyright Underwriters Laboratories Inc. Provided by IHS under license with ULNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Underwriters Laboratories Inc. Provided by IHS under license wi
2、th ULNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Underwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Spray Nozzles for Fire-Protection Service, UL 2351Second Edition, Dated June 4, 2004Summary of TopicsThis n
3、ew edition of ANSI/UL 2351 is a periodic re-issuance to ensure that ULs Standards remainup to date with regard to format and editorial issues such as numbering, pagination, andcross-referencing. This new edition also includes new requirements for Glass Bulb Integrity andfor the Production Leakage Te
4、st, and revised requirements for the Sensitivity Oven Heat Testand the Distribution Test.The following table lists the future effective dates with the corresponding reference.Future Effective Dates ReferencesSeptember 25, 2004 Section 38December 4, 2005 Sections 11, 30, 45, Sub-section 21.2, and 46.
5、2The new requirements are substantially in accordance with ULs Bulletin(s) on this subject datedNovember 19, 2003 and February 26, 2004. The bulletin(s) is now obsolete and may be discarded.As indicated on the title page (page 1), this UL Standard for Safety is an American National Standard.Attentio
6、n is directed to the note on the title page of this Standard outlining the procedures to be followedto retain the approved text of this ANSI/UL Standard.The UL Foreword is no longer located within the UL Standard. For information concerning the use andapplication of the requirements contained in thi
7、s Standard, the current version of the UL Foreword islocated on ULStandardsInfoNet at: http:/ master for this Standard at ULs Northbrook Office is the official document insofar as it relates to aUL service and the compliance of a product with respect to the requirements for that product and service,
8、or if there are questions regarding the accuracy of this Standard.ULs Standards for Safety are copyrighted by UL. Neither a printed copy of a Standard, nor the distributiondiskette for a Standard-on-Diskette and the file for the Standard on the distribution diskette should bealtered in any way. All
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11、essed or implied, including butnot limited to, the implied warranties of merchantability or fitness for any purpose.JUNE 4, 2004 UL 2351 tr1Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
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21、n view or the printed Standard.An employee of an organization purchasing a UL Standard can make a copy of the page or pages beingviewed for their own fair and/or practical internal use.The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, figures,and/or
22、other elements of the Standard having future effective dates as indicated in the note following theaffected item. The prior text for requirements that have been revised and that have a future effective dateare located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice.New produ
23、ct submittals made prior to a specified future effective date will be judged under all of therequirements in this Standard including those requirements with a specified future effective date, unlessthe applicant specifically requests that the product be judged under the current requirements. However
24、, ifthe applicant elects this option, it should be noted that compliance with all the requirements in thisStandard will be required as a condition of continued Listing and Follow-Up Services after the effectivedate, and understanding of this should be signified in writing.Copyright 2004 Underwriters
25、 Laboratories Inc.JUNE 4, 2004 UL 2351tr2Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-This Standard consists of pages dated as shown in the following checklist:Page Date1-42 .June 4, 2
26、004SA1-SA4 .June 4, 2004SB1-SB2 .June 4, 2004JUNE 4, 2004 UL 2351 tr3Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-JUNE 4, 2004 UL 2351tr4No Text on This PageCopyright Underwriters Labo
27、ratories Inc. Provided by IHS under license with ULNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-JUNE 4, 20041UL 2351Standard for Spray Nozzles for Fire-Protection ServiceFirst Edition July, 2000Second EditionJune 4, 2004The most recent designation of ANSI/UL 235
28、1 as an American National Standard(ANSI) occurred on April 27, 2004.This ANSI/UL Standard for Safety, which consists of the Second edition is undercontinuous maintenance, whereby each revision is ANSI approved uponpublication. Comments or proposals for revisions on any part of the Standard maybe sub
29、mitted to UL at any time. Written comments are to be sent to UL-RTPStandard Department, 12 Laboratory Dr., P.O. Box 13995, Research TrianglePark, NC, 27709-3995.An effective date included as a note immediately following certain requirementsis one established by Underwriters Laboratories Inc.Revision
30、s of this Standard will be made by issuing revised or additional pagesbearing their date of issue. A UL Standard is current only if it incorporates themost recently adopted revisions, all of which are itemized on the transmittal noticethat accompanies the latest set of revised requirements.ISBN 0-76
31、29-0984-6COPYRIGHT 2003, 2004 UNDERWRITERS LABORATORIES INC.UL/ANSI 2351-2004Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-JUNE 4, 2004SPRAY NOZZLES FOR FIRE-PROTECTION SERVICE - UL 235
32、12No Text on This PageCopyright Underwriters Laboratories Inc. Provided by IHS under license with ULNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CONTENTSINTRODUCTION1 Scope .52 Components 53 Units of Measurement .54 Undated References 65 Glossary .6CONSTRUCTION6
33、 General 77 Inlet Threads .78 Temperature Ratings 89 Coating and Plating .810 Pressure Rating .911 Glass Bulb Integrity 9PERFORMANCE12 General .913 Samples 914 Load on Heat Responsive Element 915 Strength of Heat Responsive Element Test 1015.1 Fusible-alloy types 1015.2 Glass-bulb types .1116 Leakag
34、e Test 1117 Hydrostatic Strength Test 1218 30-Day Leakage Test .1219 Water Hammer Test 1320 Operating Temperature (Bath) Test .1321 Sensitivity Tests 1421.1 General .1421.2 Sensitivity oven heat test 1521.3 Sensitivity room heat test for quick response (QR) nozzles 1922 Operation Lodgement Test .202
35、3 Flow Endurance Test 2124 High Temperature Test for Uncoated Nozzles 2125 High Temperature Test for Coated Nozzles 2226 Strength of Frame Test 2227 Impact Resistance Test 2328 Rough Usage Test 2529 Vibration Test 2530 Impact Test for Protective Covers .2631 Calibration Test .2832 Distribution Test
36、3133 10-Day Corrosion Test 3334 30-Day Corrosion Test 3434.1 General .3434.2 20 percent salt spray .3434.3 Samples for moist hydrogen sulfide air mixture test and moist carbon dioxide-sulfurJUNE 4, 2004 SPRAY NOZZLES FOR FIRE-PROTECTION SERVICE - UL 2351 3Copyright Underwriters Laboratories Inc. Pro
37、vided by IHS under license with ULNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-dioxide air mixture test 3534.4 Moist hydrogen sulfide air mixture 3534.5 Moist carbon dioxide-sulfur dioxide air mixture .3535 90-Day Moist Air Test .3536 Stress-Corrosion Cracking O
38、f Brass Nozzle Parts Test 3637 Stress-Corrosion Cracking of Stainless Spray Nozzle Parts Test .3638 Dezincification Test of Brass Parts 3739 Exposure Tests on Nozzles Incorporating Polymeric Gaskets 3739.1 General .3739.2 Corrosive exposures 3839.3 Temperature cycling exposure .3839.4 Hydrocarbon ex
39、posure followed by moist air exposure 3839.5 Hydrocarbon exposure followed by water immersion exposure .3939.6 Exposure to antifreeze solutions .3940 Vacuum Test .3941 Elastomeric Parts Test 4042 Freezing Test 40MANUFACTURING AND PRODUCTION TESTS43 General 4144 Production Leakage Test 4145 Glass Bul
40、b Integrity Test .41MARKING46 General 42INSTALLATION INSTRUCTIONS47 General 42SUPPLEMENT SA - TOLERANCE LIMIT CALCULATION METHODSA1 General SA1SA2 Calculation of Standard Deviation SA1SA3 Determination of K Factor SA1SA4 Comparison of Tolerance Limits .SA2SUPPLEMENT SB - NOTES ON THE STRENGTH TEST F
41、OR NOZZLE RELEASE ELEMENTS(Informative)JUNE 4, 2004SPRAY NOZZLES FOR FIRE-PROTECTION SERVICE - UL 23514Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-INTRODUCTION1 Scope1.1 These require
42、ments cover automatic and non-automatic (open) type water spray nozzles forinstallation in accordance with the Standard for Installation of Sprinkler Systems, NFPA 13, and theStandard for Water Spray Fixed Systems for Fire Protection, NFPA 15.1.2 Nozzles are categorized by the discharge coefficient
43、K of the orifice, water discharge angle orpattern, type of coating or plating, and other factors that have a bearing on their application. Automaticnozzles are also categorized by operating temperature rating.2 Components2.1 Except as indicated in 2.2, a component of a product covered by this standa
44、rd shall comply with therequirements for that component.2.2 A component is not required to comply with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this standard, orb) Is superseded by a requirement in t
45、his standard.2.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.4 Specific components are incomplete in construction features or restricted in performance capabilities.Such components are intended for use only under limited conditions, such as
46、 certain temperatures notexceeding specified limits, and shall be used only under those specific conditions.3 Units of Measurement3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.JUNE 4, 2004 SPRAY NOZZLES FOR FIRE-PROTECTION
47、SERVICE - UL 2351 5Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 Undated References4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall
48、 beinterpreted as referring to the latest edition of that code or standard.5 Glossary5.1 For the purpose of this standard the following definitions apply:5.2 AUTOMATIC NOZZLE A nozzle intended to open automatically by operation of a heat-responsiveelement that maintains the discharge orifice closed by means such as the exertion of force on a cap(button or disc). A nozzle is installed on piping so that a spray of water is discharged in a specificpattern for suppression or control of fires, or protection from fire exposure.5.3 COATED, PAINTED, OR PLATED NOZZLE A nozzle that
