1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL 393Indicating Pressure Gauges forFire-Protection ServiceUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUT
2、HORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUnderwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Indicating Pressure Gauges for Fire-Protection Service, UL 393Eighth Edition, Dated March 17, 2005Revisions: This Standar
3、d contains revisions through and including March 31, 2009.SUMMARY OF TOPICSThe following changes in requirements to the Standard for Indicating Pressure Gauges forFire-Protection Service, UL 393, are included in these revisions:1. Additional dial pressure range for Table 7.1Text that has been change
4、d in any manner is marked with a vertical line in the margin. Changes inrequirements are marked with a vertical line in the margin and are followed by an effective date noteindicating the date of publication or the date on which the changed requirement becomes effective.The new and revised requireme
5、nts are substantially in accordance with ULs Proposal(s) on this subjectdated February 13, 2009.The revisions dated March 31, 2009 include a reprinted title page (page1) for this Standard.The UL Foreword is no longer located within the UL Standard. For information concerning the use andapplication o
6、f the requirements contained in this 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 require
7、ments for that product and service,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 diskett
8、e should bealtered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding thoseStandards shall remain the sole and exclusive property of UL.All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form by an
9、y means, electronic, mechanical photocopying, recording, or otherwisewithout prior permission of UL.Revisions of UL Standards for Safety are issued from time to time. A UL Standard for Safety is currentonly if it incorporates the most recently adopted revisions.UL provides this Standard as is withou
10、t warranty of any kind, either expressed or implied, including butnot limited to, the implied warranties of merchantability or fitness for any purpose.MARCH 31, 2009 UL 393 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULIn no event will UL
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17、ncurrent access.If a multiple-user version electronic Standard was purchased, one copy of the Standard may be stored ona single LAN file-server, or on the permanent storage device of a multiple-user computer, or on an Intranetserver. The number of concurrent users shall not exceed the number of user
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20、d 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 other elements of th
21、e 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 product submittals made p
22、rior 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, ifthe applicant el
23、ects this option, it should be noted that compliance with all the requirements in thisStandard will be required as a condition of continued Listing, Recognized, and Follow-Up Services afterthe effective date, and understanding of this should be signified in writing.Copyright 2009 Underwriters Labora
24、tories Inc.MARCH 31, 2009 UL 393tr2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis Standard consists of pages dated as shown in the following checklist:Page Date1March 31, 20092-5March 17, 20056-6B.March 31, 20097-14 .March 17, 2005MARCH
25、31, 2009 UL 393 tr3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARCH 31, 2009 UL 393tr4No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARCH 17, 2005(Title Page R
26、eprinted: March 31, 2009)1UL 393Standard for Indicating Pressure Gauges for Fire-Protection ServiceFirst Edition October, 1921Second Edition March, 1967Third Edition March, 1973Fourth Edition June, 1979Fifth Edition July, 1985Sixth Edition January, 1991Seventh Edition June, 1996Eighth EditionMarch 1
27、7, 2005Comments or proposals for revisions on any part of the Standard may besubmitted to UL at any time. Proposals should be submitted via a ProposalRequest in ULs On-Line Collaborative Standards Development System (CSDS)at http:/.ULs Standards for Safety are copyrighted by UL. Neither a printed no
28、r electroniccopy of a Standard should be altered in any way. All of ULs Standards and allcopyrights, ownerships, and rights regarding those Standards shall remain thesole and exclusive property of UL.COPYRIGHT 2009 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPR
29、ODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARCH 17, 2005INDICATING PRESSURE GAUGES FOR FIRE-PROTECTION SERVICE - UL 3932No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .42 Components 43 U
30、nits of Measurement .54 Undated References 5CONSTRUCTION5 General 56 Sizes 57 Dials 58 Pointers 79 Windows .710 Elastic Elements .711 Materials 812 Pointers 8PERFORMANCE13 General .814 Nonmetallic Components .814.1 General 814.2 Light and water test 914.3 Air-oven aging test 914.4 Low temperature ex
31、posure 1015 Accuracy Test 1016 Operation Test .1117 Vibration Test 1118 Excess Pressure Test .1219 Hydrostatic Strength Test 1220 Falling Ball Impact Test 1221 Window Impact Strength Test 13MARKING22 General 13MARCH 17, 2005 INDICATING PRESSURE GAUGES FOR FIRE-PROTECTION SERVICE - UL 393 3UL COPYRIG
32、HTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover indicating pressure gauges of the elastic element type intended for usewith sprinkler or standpipe equipment for fire-protection service.1.2 These requiremen
33、ts cover gauges of trade sizes 3-1/2 to 4-1/2 inches (90 to 115 mm), inclusive.1.3 The gauges covered by these requirements are intended for installation and use according to thefollowing Standards of the National Fire Protection Association:a) Standard for Installation of Sprinkler Systems, NFPA 13
34、;b) Standard for Installation of Standpipe and Hose Systems, NFPA 14;c) Standard for Installation of Private Fire Service Mains and Their Appurtenances, NFPA 24;andd) Standard for Installation of Stationary Fire Pumps for Fire Protection, NFPA 20.2 Components2.1 Except as indicated in 2.2, a compone
35、nt of a product covered by this standard 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, or
36、b) Is superseded by a requirement in this 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
37、only under limited conditions, such as certain temperatures notexceeding specified limits, and shall be used only under those specific conditions.MARCH 17, 2005INDICATING PRESSURE GAUGES FOR FIRE-PROTECTION SERVICE - UL 3934UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTI
38、ON WITHOUT PERMISSION FROM UL3 Units of Measurement3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.4 Undated References4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall beint
39、erpreted as referring to the latest edition of that code or standard.CONSTRUCTION5 General5.1 Pressure connections shall be tapered pipe threads in the 1/4 inch-18 size conforming with theStandard for Pipe Threads, General Purpose (Inch), ANSI/ASME B1.20.1.6 Sizes6.1 The size of a gauge enclosed in
40、a cylindrical case is to be the inside diameter of the case, in inches,measured at the face of the dial.6.2 The dimensions of a flush or surface mounted pressure gauge shall be as specified in Table 6.1.Table 6.1Flush and surface mounted gauge dimensionsGauge size, Mounting bolt circle diameter Case
41、 bolt hole diameter Outside diameter of flushmounted case, maximuminches inches (mm) inches (mm) inches (mm)3-1/2 4.25 (108) 0.22 (5.6) 3.75 (95.3)4-1/2 5.38 (137) 0.22 (5.6) 4.88 (124)7 Dials7.1 The range of a gauge dial shall be as specified in Table 7.1.MARCH 17, 2005 INDICATING PRESSURE GAUGES F
42、OR FIRE-PROTECTION SERVICE - UL 393 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 7.1Dial rangesTable 7.1 revised March 31, 2009Psia(kPa)-30 Inches Hg 150 (Compound type) (-100 (vacuum) 1000)0 45 to 150 (Retard Type) (0 300 to 1000)0
43、80 to 250 or 300 (Retard Type) (0 600 to 1800 or 2000)0 100 (0 600)0 150 (0 1000)0 250 (0 1600)0 300 (0 2500)0 400 (0 - 2800)0 600 (0 4000)aUnless otherwise noted7.2 The values of the minor, or smallest, graduations on the dial shall be those specified in Table 7.2.Table 7.2Value of smallest graduat
44、ionsTable 7.2 revised March 31, 2009Range GraduationsHg, inch psi (kPa) psi (kPa) Hg, inch-30 to 0 0 to 150(Compound Type)(-10001000) 5 (25) 1/2 0 to 45 (RetardType)(0 300) 1 (5) 0 to 80 (RetardType)(0 600) 2 (10) 0 to 100 (0 600) 2 (10) 0 to 150 (0 1000) 2 (10) 0 to 250 (0 1600) 5 (25) 0 to 300 (0
45、2500) 5 (25) 0 to 400 (0 2800) 10 (50) 0 to 600 (0 4000) 10 (50) 7.3 Graduations and numerals on the dial shall be sharp and legible, as produced by silvering andlacquering, etching and filling, photographic, lithographic, and other equivalent processes.7.4 Graduation lines shall be radial to the ce
46、nter of rotation of the pointer and shall project beyond thearc described by the end of the pointer. Major and intermediate graduation lines shall be emphasized.Graduations shall not extend beyond the calibrated portion of the scale.Exception: Graduation lines on a mirror dial are not required to pr
47、oject beyond the arc described by theend of the pointer.MARCH 31, 2009INDICATING PRESSURE GAUGES FOR FIRE-PROTECTION SERVICE - UL 3936UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL7.5 Numerals provided shall enable the operator to accurately
48、 and quickly identify any pressure on thescale. Numerals shall not obscure or crowd graduations or markings. Numerals shall not extend beyondthe calibrated portion of the scale.MARCH 31, 2009 INDICATING PRESSURE GAUGES FOR FIRE-PROTECTION SERVICE - UL 393 6AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR
49、 FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARCH 31, 2009INDICATING PRESSURE GAUGES FOR FIRE-PROTECTION SERVICE - UL 3936BNo Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL7.6 The graduated scale shall be 270 degrees.7.7 See General, Section 22 for additional marking requirements for gauges.8 Pointers8.1 A pointer
