1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 860 Pipe Unions for Flammable and Combustible Fluids and Fire-Protection ServiceUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL C
2、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Pipe Unions for Flammable and Combustible Fluids and Fire-Protection Service, UL 860 Eighth Edition, Dated December 15, 2014 Summary of Topics This new edition of UL 860
3、was issued to incorporate the following changes in requirements: 1. Clarication of Requirements for Pipe Threads in Paragraphs 8.2 and 13.1 The revised requirements are substantially in accordance with Proposal(s) on this subject dated October 22, 2014. Text that has been changed in any manner or im
4、pacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective.
5、 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 this Standard as is without warranty of any kind, eithe
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7、rising 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 this Standard, regardless of the form of the claim. Users of
8、 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 or deviation introduced while purchaser is storing an electro
9、nic 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 note following the affected item. The prior text for requ
10、irements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. DECEMBER 15, 2014 UL 860 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER
11、15, 2014 UL 860 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL December 15, 2014 1 UL 860 Standard for Pipe Unions for Flammable and Combustible Fluids and Fire- Protection Service First Edition February, 1937 Second
12、 Edition July, 1950 Third Edition October, 1966 Fourth Edition March, 1969 Fifth Edition December, 1976 Sixth Edition June, 1993 Seventh Edition June, 2001 Eighth Edition December 15, 2014 This UL Standard for Safety consists of the Eight Edition including revisions through December 15, 2014. Commen
13、ts 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 (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electro
14、nic 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 2014 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCT
15、ION OR DISTRIBUTION WITHOUT PERMISSION FROM UL DECEMBER 15, 2014 UL 860 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 5 3 Units of Measurement .5 4 Undated References 5 CO
16、NSTRUCTION 5 Sizes and Ratings .5 6 Types .6 7 Materials .6 8 Pipe Ends 6 PERFORMANCE 9 General 7 10 Metallic Materials 7 11 Tensile Strength .7 12 Hydrostatic Strength 8 MANUFACTURING AND PRODUCTION TESTS 13 General .8 MARKING 14 General 8 DECEMBER 15, 2014 UL 860 3UL COPYRIGHTED MATERIAL NOT AUTHO
17、RIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover pipe unions to be employed in piping carrying designated ammable or combustible uids or in piping connections to equipment supplying water for re-protection service. 1.2 Flamma
18、ble and Combustible Fluids, as used herein, means gases and liquids that are investigated and found to be ammable or combustible, such as acetylene, fuel oil, gasoline, kerosene, liqueed petroleum gas, and manufactured and natural fuel gases. 1.3 Requirements for the installation and use of the pipe
19、 unions covered by these requirements are included in the Standards of the National Fire Protection Association pertaining to storage and use of ammable and combustible uids, such as: ANSI/NFPA 30-1996, Flammable and Combustible Liquids Code; ANSI/NFPA 31-1997, Standard for the Installation of Oil-B
20、urning Equipment; ANSI/NFPA 32-1996, Standard for Drycleaning Plants; ANSI/NFPA 51-1997, Standard for the Design and Installation of Oxygen-Fuel Gas Systems for Welding, Cutting, and Allied Processes; ANSI/NFPA 54-1999, National Fuel Gas Code AGA Z223.1-1999; ANSI/NFPA 58-1998, Liqueed Petroleum Gas
21、 Code; and pertaining to the installation of re-protection systems, such as: ANSI/NFPA 11-1998, Standard for Low-Expansion Foam; ANSI/NFPA 12-2000, Standard on Carbon Dioxide Extinguishing Systems; ANSI/NFPA 13-1999, Installation of Sprinkler Systems; ANSI/NFPA 14-2000, Standard for the Installation
22、 of Standpipe, Private Hydrant, and Hose Systems; ANSI/NFPA 15-1996, Standard for Water Spray Fixed Systems for Fire Protection; ANSI/NFPA 16-1999, Standard for the Installation of Deluge Foam-Water Sprinkler and Foam- Water Spray Systems; ANSI/NFPA 17-1998, Standard for Dry Chemical Extinguishing S
23、ystems; ANSI/NFPA 20-1999, Standard for the Installation of Stationary Pumps for Fire Protection; ANSI/NFPA 22-1998, Standard for Water Tanks for Private Fire Protection; ANSI/NFPA 24-1995, Standard for the Installation of Private Fire Service Mains and Their Appurtenances; DECEMBER 15, 2014 UL 860
24、4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 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
25、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 b) Is superseded by a requirement in this standard. 2.3 A component shall be used in accordance with its rating established for the int
26、ended conditions of use. 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 c
27、onditions. 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 4 Undated References 4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as r
28、eferring to the latest edition of that code or standard. CONSTRUCTION 5 Sizes and Ratings 5.1 Pipe unions covered by these requirements are to be designed for use with standard pipe of 3 inch (iron pipe size) and smaller sizes and for not less than 300 psi (2.07 MPa) cold 100F (37.8C) pressure ratin
29、gs. DECEMBER 15, 2014 UL 860 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6 Types 6.1 Pipe unions covered by these requirements shall be of the ball-to-full bearing arc or ball-to-cone, metal-to-metal seated type and shall consist of a h
30、ead or cone piece, a tail or ball piece, and a connecting nut. 6.2 Head or tail pieces are not prohibited from being formed and threaded or tapped for female or male pipe connection. Head or tail pieces are not prohibited from being an integral part of an elbow, tee, or other standard pipe tting. 7
31、Materials 7.1 The various parts of a pipe union are not prohibited from being formed using materials having the characteristics and resistance to corrosion associated with the intended use or as designated in the NFPA Standard. Such materials include brass, bronze, ductile iron, malleable iron, stai
32、nless steel, cast iron or steel, forged steel, or combinations thereof. 7.2 The joint shall be iron-to-iron, brass-to-iron, or brass-to-brass. That part of a pipe union incorporating an iron seat shall be zinc, nickel, cadmium or chromium plated over all, including threaded and machined surfaces. 7.
33、3 A union zinc coated by the hot-dip process shall be coated inside and out before machining and cutting of threads. 7.4 A union employing a brass or bronze insert-type seat shall have the seat securely forced, pressed, welded, soldered, or otherwise secured into the head or tail piece so as to beco
34、me a permanent part of the union. 8 Pipe Ends 8.1 The external surfaces of pipe ends shall provide a suitable wrench-gripping surface. 8.2 Pipe ends shall be threaded or tapped with taper threads in conforming to the following: a) Standard for Pipe Threads, General Purpose (Inch), ANSI/ASME B1.20.1
35、or b) Where pipe unions are intended for use in installations where piping incorporates pipe threads other than threads compliant with a), pipe threads complying with a national pipe thread standard shall be permitted. 8.2 revised December 15, 2014 8.3 Contact surfaces of pipe ends subjected to pres
36、sure in tightening the unions shall be nished smooth and true. DECEMBER 15, 2014 UL 860 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PERFORMANCE 9 General 9.1 Representative samples of each size and type of pipe union are to be selected
37、from stock and are to be subjected to the tests described in these requirements. Test bars of certain metals used in castings are required for physical tests. 10 Metallic Materials 10.1 Specimen bars of brass or bronze, ductile iron, and of malleable iron used in unions are to be prepared from the s
38、ame heat or run of metal used in making samples submitted for investigation and tests. Tests for exure and tensile strength are to be conducted and the test methods and results recorded for countercheck of future production. 11 Tensile Strength 11.1 An assembled pipe union shall withstand, without r
39、upture, the ultimate loads designated in Table 11.1 applied axially to the union and its threaded parts. Table 11.1 Tensile strength Nominal pipe size, inches Ultimate load for cold 100F (37.8C) pressure ratings 500 PSI (3.45 MPa) or less 600 PSI (4.14 MPa) or greater Pound-force kN Pound-force kN 1
40、/8 2500 11.12 4000 17.79 1/4 3800 16.90 6000 26.69 3/8 5300 23.57 8000 35.58 1/2 7700 34.25 10000 44.48 3/4 10600 47.15 14000 62.27 1 15500 68.94 18000 80.06 1-1/4 21300 94.74 23000 102.30 1-1/2 25800 114.76 28000 124.54 2 30000 133.44 40000 177.92 2-1/2 35000 155.68 55000 244.64 3 40000 177.92 7500
41、0 333.60 11.2 This test is to be conducted by attaching threaded steel bars or tubing to each end of a union or union tting, using the pipe threads provided. The bars are to be properly secured in a tensile testing machine, and the load is to be increased at a uniform rate until rupture occurs. DECE
42、MBER 15, 2014 UL 860 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 12 Hydrostatic Strength 12.1 An assembled pipe union shall withstand, without rupture or leakage at any joint, an internal hydrostatic pressure of ve times the cold 100F (
43、37.8C) pressure rating applied for a period of 1 minute. 12.2 Each sample for test is to be properly assembled and connected into a system of piping in a manner providing for the removal of all air in the piping and sample. The hydrostatic pressure is to be increased at a uniform rate until rupture
44、occurs. MANUFACTURING AND PRODUCTION TESTS 13 General 13.1 To assure compliance with these requirements in production, the manufacturer shall provide the necessary production control, inspection, and tests. The program shall include at least the following: a) Unless other proven methods are employed
45、 to ensure freedom from leakage, each union for services other than LP-Gas shall be subjected to an air pressure test of not less than 75 psi (0.52 MPa) and proved tight before shipment. Each union for LP-Gas service shall be subjected to an air pressure test of not less than 250 psi (1.72 MPa) and
46、proved tight before shipment. Samples that show leakage shall be rejected. b) To ensure conformance to the Standard for Pipe Threads, General Purpose (Inch), ANSI/ ASME B1.20.1, or alternative national recognized pipe thread standard, each manufacturer shall obtain and make use of a set of reference
47、 gauges for counterchecking the working gauges. c) Taper pipe threads shall not vary more than one turn large or one turn small from the standard provided by the gauge. d) An inspection program which will ensure compliance with the intent of all of the foregoing requirements shall be maintained at e
48、ach factory. 13.1 revised December 15, 2014 MARKING 14 General 14.1 A pipe union shall be marked with the following: a) Name, trademark, or other symbol identifying the manufacturer or private labeler; and b) Design working pressure. 14.2 Pipe unions having design working pressures of 300, 500, and
49、600 psi (2.07, 3.45, and 4.14 MPa) cold 100F (37.8C) are those also generally recognized in the trade as suitable, respectively, for 150, 250, and 300 psi (1.03, 1.72, and 2.07 MPa) working steam pressure (WSP). The respective temperature limits for the above three pressures are 358, 400, and 417F (181, 204, and 214C). DECEMBER 15, 2014 UL 860 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 14.3 Pipe unions conforming wit
