1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 569 Pigtails and Flexible Hose Connectors for LP-GasUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTH
2、ORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Pigtails and Flexible Hose Connectors for LP-Gas, UL 569 Eighth Edition, Dated November 19, 2013 Summary of Topics The Eighth Edition of the Standard for Safety for Pigtails and Flexible Hose Connec
3、tors for LP-Gas, UL 569, has been issued to reect the latest ANSI approval date and to incorporate the following proposals dated August 30, 2013: Revision to Section 15 - Bending Test - Metallic Tubing. Revision to Section 16 - Bending Test - Hose The revised requirements are substantially in accord
4、ance with Proposal(s) on this subject dated August 30, 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 prov
5、ides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, 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
6、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 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
7、this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety 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 o
8、r deviation 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 t
9、he note 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. NOVEMBER 19, 2013 UL 569 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRO
10、DUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 19, 2013 UL 569 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 19, 2013 1 UL 569 Standard for Pigtails and Flexible Hose Connectors for LP-Gas Firs
11、t Edition April, 1959 Second Edition June, 1970 Third Edition September, 1973 Fourth Edition June, 1975 Fifth Edition November, 1980 Sixth Edition March, 1990 Seventh Edition April, 1995 Eighth Edition November 19, 2013 This ANSI/UL Standard for Safety consists of the Eighth Edition. The most recent
12、 designation of ANSI/UL 569 as an American National Standard (ANSI) occurred on November 19, 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 submit
13、ted 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 altered in any way. All of ULs Standar
14、ds and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 569-2013UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBE
15、R 19, 2013 PIGTAILS AND FLEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 569 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 General 5 2.1 Units of measurement .5 2.2 Components .6 2.3 Undated
16、 references .6 CONSTRUCTION 3 General 6 4 Flexible Hose Connector .7 5 Pigtail .7 6 Materials for Pigtails .7 7 Materials for Flexible Hose Connectors 8 8 End Connecting Fittings .8 9 Inside Diameter for Flexible Hose Connectors 9 10 Thickness of Flexible Hose Tube or Cover 9 PERFORMANCE 11 General
17、10 12 Aerostatic Leakage Test .10 13 Hydrostatic Strength Test 11 14 Pull Force Test .11 15 Bending Test Metallic Tubing .12 16 Bending Test Hose 12 17 Low Temperature Test 13 18 Tensile Strength and Elongation Tests of Rubber Tube and Cover 13 18.1 General .13 18.2 Before accelerated air-oven aging
18、 13 18.3 After accelerated air-oven aging test 14 18.4 Method .14 19 Adhesion Test 15 19.1 General .15 19.2 Apparatus .15 19.3 Method .15 20 Permeation Test 16 20.1 General .16 20.2 Apparatus .16 20.3 Method .16 21 Ozone Exposure Test .16 22 Immersion Test of Rubber Tube and Cover 17 22.1 Volumetric
19、 swelling .17 22.2 Effect on tensile strength and elongation 18 23 Moist Ammonia-Air Stress Cracking Test 18 MANUFACTURING AND PRODUCTION TESTS 24 General 19 NOVEMBER 19, 2013 PIGTAILS AND FLEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 569 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION O
20、R DISTRIBUTION WITHOUT PERMISSION FROM UL MARKING 25 General 20 26 Permanence and Legibility of Marking .20 NOVEMBER 19, 2013 PIGTAILS AND FLEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 569 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUC
21、TION 1 Scope 1.1 These requirements cover pigtails and exible hose connectors used in the assembly of fuel-supply systems other than those outlined in 1.3(b) and (c), intended for liqueed petroleum gas (LP-Gas). Low or high pressure exible hose connectors are also suitable for low pressure (1.0 psig
22、 (6.9 kPa) or less) natural gas service. LP-Gas systems use either Department of Transportation (DOT) cylinders or ASME tanks and are intended to be installed in accordance with the Liquied Petroleum Gas Code, NFPA/ANSI 58. Low pressure exible hose connectors used in natural gas systems are intended
23、 to be installed in accordance with the National Fuel Gas Code, NFPA 54/ANSI Z223.1. Pigtails and exible hose connectors are used to make connection between parts of equipment or between equipment and service piping. 1.2 These requirements also cover hose without end-connection ttings that is used t
24、o manufacture exible hose connectors. 1.3 This Standard does not apply to: a) Gas appliance connectors for handling fuel gases at 5 psig (34.5 kPa) or less which are investigated under the Standard for Metal Connectors for Gas Appliances, ANSI Z21.24. b) Flexible hose connectors for engine fuel appl
25、ications which are investigated under the Outline of Investigation, LP-Gas Fuel Hose and Hose Assemblies for Vehicle Engines, UL 1785. c) Flexible hose connectors for use in conned areas. d) Hose connectors which are investigated under the Standard for Gas Hose Connectors for Portable Outdoor Gas-Fi
26、red Appliances, ANSI Z21.54. 2 General 2.1 Units of measurement 2.1.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. NOVEMBER 19, 2013 PIGTAILS AND FLEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 569 5UL COPYRIGHTED MATERIAL NOT AUTH
27、ORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.2 Components 2.2.1 Except as indicated in 2.2.2, a component of a product covered by this standard shall comply with the requirements for that component. 2.2.2 A component is not required to comply with a specic requirement
28、 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. 2.2.3 A component shall be used in accordance with its rating established for the intended conditions of use
29、. 2.2.4 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 conditions. 2.3 Undate
30、d references 2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. CONSTRUCTION 3 General 3.1 The diameter and length of a pigtail or a exible hose connector shall be not grea
31、ter than those specied in 4.1 and 5.1. 3.2 After fabrication of a pigtail, the tubing used in its construction shall be round and without indentations or other imperfections. The passage through the connector shall not be restricted by solder, brazing material, or ux. NOVEMBER 19, 2013 PIGTAILS AND
32、FLEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 569 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Flexible Hose Connector 4.1 As used in these requirements, a exible hose connector is reinforced synthetic-rubber hose that has an inside diamete
33、r of 3/16 to 2 inches (4.8 to 50.8 mm) and a length not exceeding 60 inches (1.5 m) and is provided with a connecting tting on each end. This connector is fabricated in two constructions: a) Low-pressure type for handling LP-Gas in the gaseous phase at pressures not greater than 1 psig (0.007 MPa),
34、and b) High-pressure type for handling LP-Gas in the gaseous or liquid phase and having a working pressure of not less than 350 psig (2.4 MPa). 4.2 As used in these requirements, exible hose connectors covered by this standard are intended for use at temperatures within the range of minus 40 to plus
35、 140F (minus 40 to plus 60C). 5 Pigtail 5.1 A pigtail is seamless metal tubing that has an outside diameter of 3/16 to 3/8 inch (4.8 to 9.5 mm), a length not exceeding 60 inches (1.5 m), and is provided with a connecting tting on each end. Pigtails shall have a maximum allowable working pressure not
36、 less than 250 psig (1.7 MPa). 6 Materials for Pigtails 6.1 Metallic tubing used in the construction of a pigtail shall be of material having characteristics comparable to those of soft-annealed copper tubing. 6.2 Copper tubing used in the construction of a pigtail shall have a wall thickness not le
37、ss than that specied in Table 6.1. Table 6.1 Wall thickness of copper tubing Outside diameter of tubing, inch (mm) Minimum wall thickness of tubing, inch (mm) 3/16 (4.8) 0.038 (0.97) 1/43/8 (6.49.5) 0.045 (1.14) 6.3 Aluminum shall not be used in combination with copper or a copper alloy. 6.4 Solder
38、or brazing material used for attachment of end ttings shall have a melting point (solidus temperature) not less than 1000F (538C). 6.5 A part made of drawn-brass or machined from brass rod, containing more than 15 percent zinc shall withstand, without cracking, the Moist Ammonia-Air Stress Cracking
39、Test, Section 23. 6.6 End-connecting ttings shall be of corrosion resistant metal or of steel provided with a protective coating having corrosion-resistant qualities at least equivalent to those of the coatings specied in 6.7. NOVEMBER 19, 2013 PIGTAILS AND FLEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 5
40、69 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6.7 Cadmium plating shall be not less than 0.0003 inch (0.008 mm) thick, and zinc plating shall be not less than 0.0005 inch (0.013 mm) thick. However, on parts where threads constitute the
41、 major portion of the area, the cadmium or zinc plating shall be not less than 0.00015 inch (0.0038 mm) thick. 7 Materials for Flexible Hose Connectors 7.1 The hose used in the construction of a exible hose connector shall be provided with a reinforced synthetic-rubber inner tube or liner of the oil
42、-resistant type. A rubber cover is not required if the outer braid is impregnated with a rubber cement or compound. A tube or a cover shall be smooth, of uniform thickness, free from pitting, blisters, or other imperfections. Intentional pricking of a cover shall not be considered an imperfection. T
43、his requirement does not exclude the use of a corrugated cover. 7.2 Aluminum shall not be used in combination with copper or a copper alloy. 7.3 A part made of drawn-brass or machined from brass rod, containing more than 15 percent zinc shall withstand, without cracking, the Moist Ammonia-Air Stress
44、 Cracking Test, Section 23. 7.4 End-connecting ttings shall be of corrosion resistant metal or of steel provided with a protective coating having corrosion-resistant qualities at least equivalent to those of the coatings specied in 7.5. 7.5 Cadmium plating shall be not less than 0.0003 inch (0.008 m
45、m) thick, and zinc plating shall be not less than 0.0005 inch (0.013 mm) thick. However, on parts where threads constitute the major portion of the area, the cadmium or zinc plating shall be not less than 0.00015 inch (0.0038 mm) thick. 8 End Connecting Fittings 8.1 Each end of a connector shall be
46、provided with a connecting tting consistent with the service for which the connector is designed. 8.2 A standard LP-Gas cylinder valve connecting tting shall comply with the Standard for Compressed-Gas Cylinder Valve Outlet and Inlet Connections, ANSI/CGA V-1-1987. 8.3 A compression-type tubing ttin
47、g shall not be used when it utilizes a slip-on ring or sleeve or a tting requiring the use of a gasket to obtain a gas-tight joint. Exception: This requirement is not applicable when a gas-tight joint can be obtained without the use of seal material, as in the case of a gasket or an O-ring used as a
48、 secondary seal. 8.4 Pipe threads shall be in accordance with the Standard for Pipe Threads, General Purpose (Inch), ANSI/ASME B1.20.1-1983(R92). 8.5 A hose connector or pigtail shall not be constructed with end ttings that would permit the connection of an appliance with a female CGA 600 connection
49、 to a LP-Gas cylinder larger than 2 1/2 lb. (1 kg) water capacity. NOVEMBER 19, 2013 PIGTAILS AND FLEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 569 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 9 Inside Diameter for Flexible Hose Connectors 9.1 The internal diameter of a hose shall be equal to the nominal diameter 1/32 inch (0.8 mm) for sizes up to and including 3/4 inch (19.1 mm), and 1/16 inch (1.6 mm) for larger
