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 Service STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION F
2、ROM ULUL COPYRIGHTED 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 th
3、e Standard for Flexible Sprinkler Hose with Fittings for Fire Protection Service, UL 2443. The following substantive changes are now included: Installation Instructions High Pressure Flow Test Revisions to Clarify Text, Test Methods and Requirements Marking Change in Length and Hydrostatic Strength
4、Test 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 requirements are substantially in accordance with Proposal(s) on this subject dated September 30, 2016. All rights reserved. No part of this publication may
5、 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 this Standard as is without warranty of any kind, either expressed or implied, including but not limited to,
6、 the implied warranties 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
7、 Standard, even if UL 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
8、agree to defend, indemnify, 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. NOVEM
9、BER 23, 2016 UL 2443 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 23, 2016 UL 2443 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL August 5, 20
10、15 (Title Page Reprinted: November 23, 2016) 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 of the Third Edition including revisions
11、through November 23, 2016. The most recent designation of ANSI/UL 2443 as an American National Standard (ANSI) occurred on November 23, 2016. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title Page. Comments or proposals for revisions on any part of the Standa
12、rd 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 https:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. A
13、ll of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2016 UNDERWRITERS LABORATORIES INC. ANSI/UL 2443-2016UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSI
14、ON FROM UL NOVEMBER 23, 2016 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 CONSTRUCTION 6 General
15、6 7 Materials .7 PERFORMANCE 8 Change of Length, Leakage and Hydrostatic Strength Tests .7 9 Mechanical Strength Test 8 10 High Temperature Exposure Test 8 11 Vibration Test 8A 12 Equivalent Length Determination .10 13 Salt Spray Corrosion Test .10 14 10-Day Moist Ammonia Air Stress Cracking Test .1
16、1 15 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 PRO
17、DUCTION TESTS 23 General 19 MARKINGS 24 General 20 INSTALLATION INSTRUCTIONS 25 General 20 NOVEMBER 23, 2016 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 tt
18、ings intended 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 w
19、ith the 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
20、 Components 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 th
21、e component 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 perfo
22、rmance 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 conditions. 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parent
23、heses are 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 sha
24、ll be interpreted 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 ho
25、se with 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 b
26、etween the 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 NOVEMBER 23, 2016 UL 2443 5UL C
27、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5.6 PROPRIETARY GROOVE Dimensions of a grooved end that differ by dimension or tolerance from those specied ANSI/AWWA C606, Standard, Standard for Grooved and Shouldered Joints. These proprietary g
28、rooves are intended for use with specic rubber gasketed ttings for which the combination of the groove and tting has demonstrated compliance ANSI/UL 213, Standard for Rubber Gasketed Fittings for Fire Protection Service. CONSTRUCTION 6 General 6.1 Flexible sprinkler hose with threaded end ttings sha
29、ll be constructed of metallic pressure retaining components and have a rated pressure of 175 psig (1.21 Mpa) or higher. 6.2 The inlet 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
30、 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-inch 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 th
31、reads shall be permitted to be provided with pipe threads complying with a national pipe thread standard compatible with those ttings. 6.2.1 Grooved inlet connections shall either comply with the groove dimensions specied in ANSI/AWWA C606, Standard for Grooved and Shouldered Joints or have propriet
32、ary grooves. 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
33、of a exible 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
34、 3 ft (914 mm) 2 3 ft (914 mm) and greater 3 NOVEMBER 23, 2016 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
35、thickness 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
36、 materials, or non-metallic materials evaluated to provide acceptable performance for the application. 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 7.5, or comply with the Salt Spray Corrosion Test, Secti
37、on 13. 7.5 With reference to 7.4, the following coatings meet this requirement: a) A 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 Coatin
38、g Thickness Test, Section 22. b) A hot-dipped mill galvanized sheet steel referenced 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, A
39、STM A653/A653M, with not less than 40 percent of the zinc on any side, based on the minimum 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
40、 in accordance with the test method of the Standard Test Method for Weight (Mass) of 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 Change of Length, Leakage and
41、Hydrostatic Strength Tests 8.1 When tested as specied in 8.2 and 8.3, exible hose with ttings shall show no: a) Change in length of more than 1 percent of the hose length during and after pressurization to 1.5 times the rated working pressure; b) Signs of leakage at twice the rated working pressure;
42、 or c) Rupture at four times the rated working pressure. 8.2 Two samples each of the minimum and maximum lengths are to be subjected to this test. 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. T
43、he sample hose inlet is to be secured and the hose length is to be measured in the straight condition with the hose unpressurized. A deectometer or similar device is to be positioned to continuously measure the movement of the sprinkler outlet. The initial position of the sprinkler outlet is to be m
44、easured unpressurized and recorded. The inlet pressure is then to be gradually increased to 20 psig (138 kPa) and the position of the sprinkler outlet is to be measured and recorded. The inlet pressure is then to be gradually increased to 1.5 times the rated working pressure and held for 1 minute. A
45、fter 1 minute, the length of the hose is to be measured again and compared to the measurement taken at 20 psig (138 kPa) to determine compliance with 8.1 (a during pressurization. The NOVEMBER 23, 2016 UL 2443 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT P
46、ERMISSION FROM UL pressure is then to be decreased to 0 psig (0 kPa) and the position of the sprinkler outlet is to be compared to the initial recorded measurement of the unpressurized sample to determine compliance with 8.1 a) after being pressurized to 1.5 times the rated working pressure. 8.3 Sub
47、sequent to the testing in 8.2, the pressure is to be gradually 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 gradually increased to four times the rated working pressure of the sample, held for 5 minutes and obser
48、vations made for rupture of the test samples. 9 Mechanical Strength Test 9.1 A exible sprinkler hose with ttings installed 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 witho
49、ut permanent movement, deformation, or fracture of the tting outlet. 9.2 The anchoring components are to be secured in accordance with the manufacturers installation instructions with the outlet located 3 in. ( 0.125 in) from one of the ends of the anchored support bar. This distance is to be from the centerline of the tting outlet to the inside edge of the structure to which the end bracket is attached. A 60 pound-foot (81 Nm) torque is then to be applied at the outlet in a direction
