1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 2443 Flexible Sprinkler Hose with Fittings for Fire Protection ServiceUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED
2、 MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Flexible Sprinkler Hose with Fittings for Fire Protection Service, UL 2443 Third Edition, Dated August 5, 2015 Summary of Topics This is the Third Edition of the Standard for Flexi
3、ble Sprinkler Hose with Fittings for Fire Protection Service, UL 2443. The following substantive changes from the Second Edition are now included: Stress Corrosion Cracking of Stainless Steel Parts Test High Pressure Flow Test Fatigue Tests Revisions to Clarify and Update Test Method and Requirement
4、s Denition of a Bend Minimum number of bends for testing Tool or template for verifying minimum bend radii The requirements are substantially in accordance with Proposal(s) on this subject dated March 13, 2015 and June 5, 2015. All rights reserved. No part of this publication may be reproduced, stor
5、ed 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 this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warrant
6、ies of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if U
7、L or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, ind
8、emnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this
9、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 note following the affected item. The prior text for requirements that have been revised and that have a future effective date are
10、 located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. AUGUST 5, 2015 UL 2443 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 5, 2015 UL 2443 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZE
11、D FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL August 5, 2015 1 UL 2443 Standard for Flexible Sprinkler Hose with Fittings for Fire Protection Service First Edition November, 2004 Second Edition May, 2010 Third Edition August 5, 2015 This ANSI/UL Standard for Safety consists o
12、f the Third Edition. The most recent designation of ANSI/UL 2443 as an American National Standard (ANSI) occurred on August 4, 2015. 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
13、part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be alte
14、red in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC. ANSI/UL 2443-2015UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION
15、 WITHOUT PERMISSION FROM UL AUGUST 5, 2015 UL 2443 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 Components 4 3 Units of Measurement .4 4 Undated References 5 5 Glossary .5 CONSTRUCT
16、ION 6 General 6 7 Materials .7 PERFORMANCE 8 Hydrostatic Pressure and Leakage Test .7 9 Mechanical Strength Test 8 10 High Temperature Exposure Test 8 11 Vibration Test .8 12 Equivalent Length Determination .10 13 Salt Spray Corrosion Test .10 14 10-Day Moist Ammonia Air Stress Cracking Test .11 15
17、Stress-Corrosion Cracking of Stainless Steel Parts Test .12 16 Elastomeric Parts Test 12 17 Low Temperature Test for Dry Pipe Systems .13 18 Pressure Cycling Test .13 19 Vacuum Test .14 20 High Pressure Flow Test 14 21 Fatigue Test .16 22 Metallic Coating Thickness Test 18 MANUFACTURING AND PRODUCTI
18、ON TESTS 23 General 19 MARKINGS 24 General 20 INSTALLATION INSTRUCTIONS 25 General 20 AUGUST 5, 2015 UL 2443 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 This standard covers exible sprinkler hose with ttings int
19、ended for direct connection to re sprinklers in installations requiring a exible attachment to the sprinkler system piping such as clean rooms, suspended ceilings, and exhaust ducts. 1.2 The products covered by this standard are intended for use in sprinkler systems installed in accordance with the
20、Standard for Installation of Sprinkler Systems, NFPA 13; Standard for the Installation of Sprinkler Systems in Residential Occupancies Up to Four Stories in Height, NFPA 13R; and Standard for the Installation of Sprinkler Systems in One- and Two-Family Dwellings and Mobile Homes, NFPA 13D. 2 Compone
21、nts 2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with the requirements for that component. 2.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the compon
22、ent in the product covered by this standard, or 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 of use. 2.4 Specic components are incomplete in construction features or restricted in performance c
23、apabilities. 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 conditions. 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses ar
24、e explanatory or approximate information. AUGUST 5, 2015 UL 2443 4UL 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 in
25、terpreted as referring to the latest edition of that code or standard. 5 Glossary 5.1 For the purpose of this standard the following denitions apply: 5.2 BEND A 90-degree change in direction of the exible sprinkler hose. 5.3 FLEXIBLE HOSE WITH FITTINGS HAVING HIGH FLEXIBILITY This type of hose with
26、ttings is intended to be used in applications where frequent movement between the two ends of the hose is expected after installation. 5.4 FLEXIBLE HOSE WITH FITTINGS HAVING LIMITED FLEXIBILITY This type of hose with ttings is intended to be used in applications where little or no movement between t
27、he two ends is expected after installation. 5.5 MINIMUM BEND RADIUS The least distance permitted by the manufacturer as measured from the focal point to the centerline of the hose. See Figure 5.1. This is generated text for gtxt. Figure 5.1 Minimum bend radius AUGUST 5, 2015 UL 2443 5UL COPYRIGHTED
28、MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION 6 General 6.1 Flexible sprinkler hose with threaded end ttings shall be constructed of metallic pressure retaining components and have a rated pressure of 175 psig (1.21 Mpa) or higher. 6.2 The i
29、nlet shall have a nominal 1-inch size or larger male or female NPT pipe threads in accordance with the Standard for Pipe Threads, General Purpose (Inch), ANSI/ASME B1.20.1 or other suitable means of connection such as a grooved tting in at least a 1-inch size. The outlet shall have 1/2, 3/4 or 1-inc
30、h female NPT pipe threads. Exception: Flexible hose with threaded tting ends intended for use in installations where ttings incorporate pipe threads other than NPT type threads shall be permitted to be provided with pipe threads complying with a national pipe thread standard compatible with those tt
31、ings. 6.3 The exible hose shall be provided with the ttings attached and secured to the hose. The inside diameter of the hose and ttings shall not be less than 0.75 inch (19 mm) nor the diameter of the largest sprinkler orice intended to be installed onto the assembly. 6.4 The maximum length of a ex
32、ible sprinkler hose with tting shall be 6 ft (1.8 m). 6.5 A exible sprinkler hose shall be constructed to allow not less than the number of bends as specied in Table 6.1. Table 6.1 Number of bends Flexible sprinkler hose length Number of bends 2 ft (610 mm) and less 1 Over 2 ft (610 mm) up to 3 ft (
33、914 mm) 2 3 ft (914 mm) and greater 3 AUGUST 5, 2015 UL 2443 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 7 Materials 7.1 A pressure retaining part constructed of ferrous metal (not including stainless steel) shall have a wall thickness
34、of not less than 0.109 inch (2.76 mm). 7.2 Flexible hose and braiding (if provided) shall be constructed of a material having resistance to corrosion equivalent to or exceeding that of bronze or Series 300 stainless steel. 7.3 Loading carrying anchoring components shall be made of metallic or non-me
35、tallic materials. 7.4 Anchoring components made of ferrous metal having a thickness less than 0.119 inch (3.0 mm) shall be protected by a coating described in 7.4, or comply with the Salt Spray Corrosion Test, Section 13. 7.5 With reference to 7.3, the following coatings meet this requirement: a) A
36、zinc coating having a minimum thickness of 0.0005 inch (0.0127 mm) on all outside surfaces and 0.0003 inch (0.0076 mm) on all inside surfaces. The thickness of the coating is to be established by the Metallic Coating Thickness Test, Section 22. b) A hot-dipped mill galvanized sheet steel referenced
37、by the manufacturer as conforming with the coating designation G90 in Table I of the Standard Specication for Steel Sheet, Zinc- Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process, ASTM A653/A653M, with not less than 40 percent of the zinc on any side, based on the m
38、inimum single spot test requirement in this ASTM Designation. The weight of the zinc coating is to be determined by any equivalent method; however, in case of question, the weight of the coating shall be established in accordance with the test method of the Standard Test Method for Weight (Mass) of
39、Coating on Iron or Steel Articles with Zinc or Zinc-Alloy Coatings , ASTM A90/A90M. The edges of a stamping complying with this requirement are not required to be plated. PERFORMANCE 8 Hydrostatic Pressure and Leakage Test 8.1 When tested as specied in 8.2, exible hose with ttings shall show no: a)
40、Change in length of more than 0.1 inch/foot of hose length at 1.5 times the rated working pressure; b) Signs of leakage at twice the rated working pressure; or c) Rupture at ve times the rated working pressure. 8.2 Two samples each of the minimum and maximum lengths are to be subjected to this test.
41、 Each test sample is to be tted with pipe plugs, lled with water in such a manner as to exclude all air, and connected to a hydrostatic pressure source. The sample length is to be measured and then the hydrostatic pressure increased to 1.5 times the rated working pressure and held for 1 minute. Whil
42、e pressurized, the length of the hose is to be measured again to determine compliance with 8.1 (a. The pressure is then to be increased to two times the rated pressure and held for 1 minute. Observations are to be made for leakage. The pressure is then to be increased to ve times the rated working p
43、ressure of the sample, held for 1 minute and observations made for rupture of the test samples. AUGUST 5, 2015 UL 2443 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 9 Mechanical Strength Test 9.1 A exible sprinkler hose with ttings instal
44、led in its intended position using the anchoring components referenced in the installation instructions shall withstand a torque of 60 pound-feet (81 Nm) applied to the outlet without movement of the tting outlet, deformation, or fracture. 9.2 The anchoring components are to be secured and a 60 poun
45、d-foot (81 Nm) torque is then to be applied at the outlet for 10 seconds. If the design of the anchoring system is asymmetrical, separate samples are to be tested so that the orientations considered to be most challenging are evaluated for mechanical strength. 9.3 During and following application of
46、 the torque, the sample is to be visually examined for movement of the tting, deformation or fracture. 10 High Temperature Exposure Test 10.1 When tested as specied in 10.2, a exible sprinkler hose with ttings constructed using elastomeric or polymeric seals shall show no evidence of leakage or rupt
47、ure. 10.2 Two samples are to be prepared and subjected to a hydrostatic pressure of twice the rated working pressure in accordance with 8.2. The samples are then to be allowed to dry and then exposed to an ambient temperature in accordance with Table 10.1 for 90 days. Following this exposure, the sa
48、mples are to be individually subjected to a hydrostatic pressure of twice the rated working pressure for 1 minute. Table 10.1 Test temperatures Maximum intended ambient temperature rating Test temperature F (C) F (C) 150 (66) 175 (79) 225 (107) 250 (121) 300 (149) 325 (163) 11 Vibration Test 11.1 Wh
49、en tested as specied in 11.2 11.4, a exible sprinkler hose with ttings shall show no evidence of leakage, rupture, or movement of the outlet tting affecting the performance of the exible hose assembly. 11.2 Three samples of a representative hose length are to be subjected to this test, except that a fourth sample is required to be tested if the exible hose with tting is intended to be installed in vertical orientation with no bends. The outlet tting is to be installed in
