1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1486 Quick Opening Devices for Dry Pipe Valves for Fire Protection ServiceUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIG
2、HTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Quick Opening Devices for Dry Pipe Valves for Fire Protection Service, UL 1486 Third Edition, Dated January 8, 2004 SUMMARY OF TOPICS This revision of ANSI/UL 1486 is being iss
3、ued to reect the reaffirmation of the ANSI approval of the Standard. No technical changes have been made to the document. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. The revisions are substantially in accordan
4、ce with Proposal(s) on this subject dated June 14, 2013. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides
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8、viation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the n
9、ote following the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. AUGUST 6, 2013 UL 1486 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTIO
10、N OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 6, 2013 UL 1486 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 8, 2004 (Title Page Reprinted: August 6, 2013) 1 UL 1486 Standard for Quick Opening Devices f
11、or Dry Pipe Valves for Fire Protection Service First Edition May, 1979 Second Edition August, 1993 Third Edition January 8, 2004 This ANSI/UL Standard for Safety consists of the Third Edition including revisions through August 6, 2013. The most recent designation of ANSI/UL 1486 as a Reaffirmed Amer
12、ican National Standard (ANS) occurred on August 6, 2013. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be
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14、hts regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 1486-2003 (R2013)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 7, 2008 UL 1486 2 No Text on This
15、 PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Units of Measurement .5 3 Components 5 4 Undated References 6 CONSTRUCTION 5 General 6 PERFORMANCE 6 General 6 7 Elastomeric Parts (Except Gaskets) Test
16、7 8 10-Day Moist Ammonia Air Stress Cracking Test .7 9 Operation Tests .8 9.1 Quick opening devices 8 9.2 Accelerator and dry pipe valve combination .10 10 Restricted Orice Test .11 11 Leakage Test 11 12 Hydrostatic Pressure Test .12 MANUFACTURING AND PRODUCTION TESTS 13 Leakage Test 12 14 Restricte
17、d Orice Test .12 MARKING 15 General 12 INSTALLATION INSTRUCTIONS 16 General 13 AUGUST 7, 2008 UL 1486 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This page intentionally left blank. AUGUST 7, 2008 UL 1486 4UL COPYRIGHTED MATERIAL NOT AU
18、THORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 This standard covers quick opening devices intended for attachment to dry pipe valves to reduce the time delay in operation of the valve following opening of one or more sprinklers. The quick openin
19、g devices consist of accelerators and exhausters for use with a specic dry pipe valve design. 1.2 The products covered by this standard are intended for use in re protection service as outlined by the Standard for Installation of Sprinkler Systems, NFPA 13. 2 Units of Measurement 2.1 Values stated w
20、ithout parentheses are the requirement. Values in parentheses are explanatory or approximate information. 3 Components 3.1 Except as indicated in 3.2, a component of a product covered by this standard shall comply with the requirements for that component. 3.2 A component is not required to comply wi
21、th a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 3.3 A component shall be used in accordance with its rating established for the inten
22、ded conditions of use. 3.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic con
23、ditions. JANUARY 8, 2004 UL 1486 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Undated References 4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the la
24、test edition of that code or standard. CONSTRUCTION 5 General 5.1 Quick opening devices shall have a minimum working pressure of 175 pounds per square inch gauge (psig) (1.21 MPa). 5.2 When a quick opening device does not required the entrance and passage of water to function, it shall incorporate a
25、n antiooding feature or be provided with an antiooding device. See 5.6. 5.3 Clearances between moving parts constructed of metallic materials other than brass or metals having equivalent corrosion resistant properties shall be not less than 1/8 inch (3.2 mm). 5.4 Orices shall be constructed of brass
26、 or of material having equivalent corrosion resistant properties. 5.5 A quick opening device generally consists of one of the following two constructions that are intended to reduce the time delay between the operation of the rst sprinkler and the entrance of water into the sprinkler piping of a dry
27、 pipe system. a) ACCELERATOR A device intended to induce dry pipe system air into a chamber of a dry pipe valve to reduce the trip time. b) EXHAUSTER A device intended to discharge dry pipe system air directly to atmosphere. 5.6 For the purpose of these requirements, an antiooding device is an autom
28、atic valve that is either an external or internal part of the quick opening device, and that allows system air to pass into the quick opening device then automatically closes to prevent the entrance of water or foreign matter into the device. See 9.2.1. PERFORMANCE 6 General 6.1 Representative sampl
29、es of the quick opening device are to be subjected to the tests described in these requirements. Additional samples of parts constructed of nonmetallic materials, such as rubber gaskets and diaphragms are required for physical tests. JANUARY 8, 2004 UL 1486 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FO
30、R FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 7 Elastomeric Parts (Except Gaskets) Test 7.1 An elastomeric part used to provide a seal shall have the following properties when tested as specied in the Standard for Gaskets and Seals, UL 157: a) For silicone rubber (having poly-org
31、ano-siloxane as its constituent characteristic), a minimum tensile strength of 500 psi (3.4 MPa) and a minimum ultimate elongation of 100 percent. b) For natural rubber and synthetic rubber other than silicone rubber, a minimum tensile strength of 1500 psi (10.3 MPa) and minimum ultimate elongation
32、of 150 percent; or a minimum tensile strength of 2200 psi (15.2 MPa) and a minimum ultimate elongation of 100 percent. c) Those properties relating to maximum tensile set; minimum tensile strength and elongation after oven aging; and hardness after oven aging, all as specied in UL 157. The maximum s
33、ervice temperature used to determine the oven time and temperature for oven aging is considered to be 60C. 7.2 The Standard for Gaskets and Seals, UL 157, provides for the testing of either nished elastomeric parts or sheet or slab material. Sheet or slab material is to be tested when the elastomeri
34、c parts are O-rings having diameters of less than 1 inch (25.4 mm). The material tested is to be the same as that used in the product, regardless of whether nished elastomeric parts or sheet or slab material is tested. 8 10-Day Moist Ammonia Air Stress Cracking Test 8.1 After being subjected to the
35、conditions described in 8.2 8.4, a brass part containing more than 15 percent zinc when examined using 25X magnication shall: a) Show no evidence of cracking; or b) Comply with the Operation Test, Section 9, and the Leakage Test, Section 11, when there is evidence of cracking. 8.2 Each test sample i
36、s to be subjected to the physical stresses normally imposed on or within a part as the result of assembly with other components. Such stresses are to be applied to the sample prior to and maintained during the test. Samples with threads, intended to be used for installing the product in the eld, are
37、 to have the threads engaged and tightened to the torque specied in Table 8.1. Teon tape or pipe compound are not to be used on the treads. JANUARY 8, 2004 UL 1486 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 8.1 Torque requirement
38、s for threaded connections Nominal thread size, inches Torque pound-inches (Nm) 1 1200 (135.6) 1-1/4 1450 (163.8) 1-1/2 1550 (175.1) 2 1650 (186.4) 2-1/2 1750 (197.7) 3 1800 (203.4) 8.3 Three samples are to be degreased and then continuously exposed in a set position for ten days to a moist ammonia-
39、air mixture maintained in a glass chamber approximately 12 by 12 by 12 inches (305 by 305 by 305 mm) having a glass cover. 8.4 Approximately 600 ml of aqueous ammonia having a specic gravity of 0.94 is to be maintained at the bottom of the glass chamber below the samples. The samples are to be posit
40、ioned 1-1/2 in. (38.1 mm) above the aqueous ammonia solution and supported by an inert tray. The moist ammonia-air mixture in the chamber is to be maintained at atmospheric pressure and at a temperature of 93F (34C). 9 Operation Tests 9.1 Quick opening devices 9.1.1 A quick opening device shall oper
41、ate before the pressure drop exceeds 5.0 psig (0.034 MPa) after the quick opening valve controlling the ow of air to the orice is opened. 9.1.2 The inlet of a quick opening device, with separate or integral antiooding mechanism, is to be connected to the air space of a pressure tank. The tank is to
42、be calibrated so that air volumes of simulated sprinkler system capacities ranging from 300 to 1200 gallons (1.14 to 4.54 m 3 ) or more, in increments of 300 gallons (1.14 m 3 ), can be established. An orice, controlled by a quick opening valve connected to the air space, is to be used as the method
43、 of dropping the air pressure in accordance with the pressure decay curves illustrated in Figure 9.1. A quick opening device rated for use in systems having a maximum volume of 750 gallons (2.84 m 3 ) is to be tested using a maximum volume of 1200 gallons. A quick opening device rated for use in sys
44、tems having volumes in excess of 750 gallons is to be tested using a maximum volume of approximately 1.6 times the rated valve capacity. See Table 9.1. This is generated text for gtxt. JANUARY 8, 2004 UL 1486 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PE
45、RMISSION FROM UL Figure 9.1 Decay curves JANUARY 8, 2004 UL 1486 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 9.1 Decay curve reference for quick opening device rated 750 gallons or more Maximum sprinkler system volume, Maximum vol
46、ume test decay curve from Figure 9.1, gallons (m 3 ) gallons (m 3 ) 750 (2.84) 1200 (4.54) 940 (3.56) 1500 (5.68) 1125 (4.26) 1800 (6.81) 1315 (4.98) 2100 (7.95) 1500 (5.68) 2400 (9.08) 1690 (6.40) 2700 (10.22) 1875 (7.10) 3000 (11.36) 2060 (7.80) 3300 (12.49) 2250 (8.52) 3600 (13.63) 2440 (9.24) 39
47、00 (14.76) 2625 (9.94) 4200 (15.90) 2800 (10.60) 4500 (17.03) 3000 (11.36) 4800 (18.16) 9.1.3 Tank air space pressures of 50, 35, and 25 psig (0.34, 0.24, and 0.17 MPa) are to be established for simulated sprinkler system capacities of 300, 600, 900, and 1200 gallons (1.14, 2.27, 3.41, and 4.54 m 3
48、). When the device is designed for capacities greater than 1200 gallons (4.54 m 3 ) the capacities are to be established in 300 gallon (1.14 m 3 ) increments. The pressure decay curves for the 50 psi starting pressure are to be as illustrated in Figure 9.1. Also, the starting points for tank air spa
49、ce pressures of 35 psi and 25 psi are to be as illustrated on the decay curves for each simulated sprinkler system capacity. 9.1.4 The quick opening valve controlling the ow of air to the orice is to be opened and the pressure drop observed for each of the applicable pressures/capacities to verify compliance with 9.1.1. 9.2 Accelerator and dry pipe valve combination 9.2.1 Following the tests described in 9.1.1 9.1.4, an accelerator (and antiooding device, if separate), when subjecte
