1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 569 Pigtails and Flexible Hose Connectors for LP-Gas STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHT
2、ED MATERIAL NOT AUTHORIZED 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 These revisions to ANSI/UL 569 include the following: 1. Revisi
3、on to the moist ammonia-air stress cracking test The revised requirements are substantially in accordance with Proposal(s) on this subject dated May 19, 2017. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. All ri
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8、ndard on the purchasers computer system. JULY 28, 2017 UL 569 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 28, 2017 UL 569 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WIT
9、HOUT PERMISSION FROM UL NOVEMBER 19, 2013 (Title Page Reprinted: 7/28/2017) 1 UL 569 Standard for Pigtails and Flexible Hose Connectors for LP-Gas First Edition April, 1959 Second Edition June, 1970 Third Edition September, 1973 Fourth Edition June, 1975 Fifth Edition November, 1980 Sixth Edition Ma
10、rch, 1990 Seventh Edition April, 1995 Eighth Edition November 19, 2013 This ANSI/UL Standard for Safety consists of the Eighth Edition including revisions through July 28, 2017. The most recent designation of ANSI/UL 569 as an American National Standard (ANSI) occurred on July 27, 2017. ANSI approva
11、l for a standard does not include the Cover Page, Transmittal Pages, and Title Page. Comments or proposals for revisions on any 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 (CSD
12、S) 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. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 201
13、7 UNDERWRITERS LABORATORIES INC. ANSI/UL 569-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 19, 2013 PIGTAILS AND FLEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 569 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FUR
14、THER 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 references .6 CONSTRUCTION 3 General 6 4 Flexible Hose Connector .7 5 Pigtail .7 6 Materials for Pigtails 7 7 Materials for Flexible Hos
15、e 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 10 12 Aerostatic Leakage Test 10 13 Hydrostatic Strength Test .11 14 Pull Force Test 11 15 Bending Test Metallic Tubing .12 16 Bending Tes
16、t 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 .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 2
17、0 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 swelling 17 22.2 Effect on tensile strength and elongation .18 23 Moist Ammonia-Air Stress Cracking Test 18 MANUFACTURING AND PRODUCTION TE
18、STS 24 General 19 NOVEMBER 19, 2013 PIGTAILS AND FLEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 569 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARKING 25 General 20 26 Permanence and Legibility of Marking .20 NOVEMBER 19, 2013 PIGTAILS AND F
19、LEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 569 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover pigtails and exible hose connectors used in the assembly of fuel-supply systems other than those o
20、utlined 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 (6.9 kPa) or less) natural gas service. LP-Gas systems use either Department of Transportation (DOT) cylinders or ASME tanks and are intend
21、ed 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 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 co
22、nnection between parts of equipment or between equipment and service piping. 1.2 These requirements also cover hose without end-connection ttings that is used to manufacture exible hose connectors. 1.3 This Standard does not apply to: a) Gas appliance connectors for handling fuel gases at 5 psig (34
23、.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 applications which are investigated under the Outline of Investigation, LP-Gas Fuel Hose and Hose Assemblies for Vehicle Engines, UL 1785. c) Fl
24、exible hose connectors for use in conned areas. d) Hose connectors which are investigated under the Standard for Gas Hose Connectors for Portable Outdoor Gas-Fired Appliances, ANSI Z21.54. 2 General 2.1 Units of measurement 2.1.1 Values stated without parentheses are the requirement. Values in paren
25、theses are explanatory or approximate information. NOVEMBER 19, 2013 PIGTAILS AND FLEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 569 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED 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
26、 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 that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or
27、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. 2.2.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended fo
28、r use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 2.3 Undated references 2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referr
29、ing 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 greater 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 in
30、dentations or other imperfections. The passage through the connector shall not be restricted by solder, brazing material, or ux. NOVEMBER 19, 2013 PIGTAILS AND FLEXIBLE HOSE CONNECTORS FOR LP-GAS - UL 569 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMIS
31、SION 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 diameter 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. Thi
32、s 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), 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 MP
33、a). 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 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
34、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 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 havin
35、g 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 less 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
36、 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 or brazing material used for attachment of end ttings shall have a melting point (solidus temperature) not less than 1000F (538C). 6.5 A par
37、t 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 Test, Section 23. 6.6 End-connecting ttings shall be of corrosion resistant metal or of steel provided with a protective coating having corr
38、osion-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 569 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6.7 Cadmium plating shall be
39、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 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
40、 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-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
41、be smooth, of uniform thickness, free from pitting, blisters, or other imperfections. Intentional pricking of a cover shall not be considered an imperfection. This 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.
42、 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 Cracking Test, Section 23. 7.4 End-connecting ttings shall be of corrosion resistant metal or of steel provided with a protective coating h
43、aving 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 mm) 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
44、 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 provided with a connecting tting consistent with the service for which the connector is designed. 8.2 A standard LP-Gas cylinder valve conne
45、cting 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 tting 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. Exceptio
46、n: 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 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(
47、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 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 5
48、69 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)
49、, and 1/16 inch (1.6 mm) for larger sizes. 9.2 A tapered plug gauge of wood or metal having a taper of 3/8 in per foot (31.3 mm/m) marked to indicate variation of 1/64 in (0.4 mm) in diameter, a set of wood or metal plug gauges, straight or ball type, in increments of no greater than 0.01 in (0.3 mm) for hoses of nominal size 1 in (25 mm) and less, and in increments no greater than 0.02 in (0.5 mm) for hose of nominal size greater than 1 in (25 mm), or in some cases (see 8.3), an e
