UL 1769-2015 UL Standard for Safety Cylinder Valves (Fifth Edition Reprint with revisions through and including April 27 2016).pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1769 Cylinder ValvesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION

2、OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Cylinder Valves, UL 1769 Fifth Edition, Dated June 25, 2015 Summary of Topics This new edition of ANSI/UL 1769 includes the addition of requirements for refrigerant and to address the editorial maintenance of UL Standards for Safe

3、ty. The revised requirements are substantially in accordance with Proposal(s) on this subject dated May 8, 2015. 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,

4、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 warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequ

5、ential, 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 UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liab

6、ility 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, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including r

7、easonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. JUNE 25, 2015 UL 1769 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 25,

8、 2015 UL 1769 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 25, 2015 1 UL 1769 Standard for Cylinder Valves First Edition April, 1989 Second Edition May, 1996 Third Edition February, 2003 Fourth Edition June, 2

9、006 Fifth Edition June 25, 2015 This ANSI/UL Standard for Safety consists of the Fifth edition. The most recent designation of ANSI/UL 1769 as an American National Standard (ANSI) occurred on June 25, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page,

10、or effective date information. 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 (CSDS) at http:/. ULs Standards for Safety are copyrighted

11、 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 2015 UNDERWRITERS LABORATORIES INC. ANSI/UL 1769-2015UL CO

12、PYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 25, 2015 CYLINDER VALVES - UL 1769 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope

13、 .5 2 General 6 2.1 Components .6 2.2 Units of measurement .6 2.3 Undated references .6 3 Service-Pressure and Temperature Ratings 7 4 Glossary .7 CONSTRUCTION 5 General 8 6 Handwheels 9 7 Materials 11 8 Connections .12 9 Pressure-Relief Devices 13 10 Bodies .13 11 Shut-off Assemblies .14 12 Service

14、 Valves for LP-Gas for Use On Industrial Truck Type Containers 14 PERFORMANCE 13 General 16 14 Deformation Test .17 15 External Leakage Test 18 16 Seat Leakage Test 18 17 Endurance Test 18 18 Hydrostatic-Pressure Test .19 19 Pressure-Relief Device Tests .19 20 Accelerated Aging Test 20 21 Accelerate

15、d Hydrogen-Pressure Aging Test 20 22 Fluid Compatibility Test 20 23 Tests of Gaskets and Seals Used in Refrigerant Systems .21 23.1 General .21 23.2 Tensile strength and elongation test 21 23.3 Refrigerant exposure test 22 23.4 Oil immersion test 22 24 Low-Temperature Test 22 25 Moist Ammonia Air St

16、ress Cracking Test 22 26 Valve Stem Torque Test .23 27 BTU Flow Rating Test 24 28 Service Valves for LP-Gas for Use On Industrial Truck Type Containers 24 MANUFACTURING AND PRODUCTION TESTS 29 General 25 JUNE 25, 2015 CYLINDER VALVES - UL 1769 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPR

17、ODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARKING 30 General 25 Appendix A Standards for ComponentsA1 JUNE 25, 2015 CYLINDER VALVES - UL 1769 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requireme

18、nts cover shut-off valves, with or without relief valve, that are for use on cylinders that comply with the specications and charging and maintenance regulations of the U.S. Department of Transportation (DOT) or the corresponding specications and regulations of Transport Canada (TC). 1.2 Valves cove

19、red by these requirements are for use on DOT or TC cylinders used for ow of gas into and out of the cylinder, in applications such as, but not limited to, automotive, medical, or industrial systems, vehicles, facilities, or providing fuel to buildings or appliances, and as covered in the following s

20、tandards: a) Liqueed Petroleum Gas Code, NFPA 58; b) Design and Installation of Oxygen-Fuel Gas Systems for Welding, Cutting, and Allied Processes, NFPA 51; c) Safety Requirements for the Storage and Handling of Anhydrous Ammonia See CGA G-2.1, CGA K61.1; d) Safety in Welding, Cutting, and Allied Pr

21、ocesses, AWS Z49.1; and e) Health Care Facilities, NFPA 99. 1.3 Gas-line shut-off valves, other shutoff valves used on ASME containers, ller valves, excess ow check valves, for use with liqueed petroleum gases or anhydrous ammonia are covered by the requirements in the Standard for Flow Control Valv

22、es for Anhydrous Ammonia and LP-Gas, UL 125. 1.4 Gas-line shut-off valves for use with ammable gases are covered by the requirements in the Standard for Valves for Flammable Fluids, UL 842. 1.5 Gas-line shutoff valves for compressed gases, other than those described in 1.3 and 1.4, are covered by th

23、e requirements in Outline of Investigation for Compressed Gas Shutoff Valves, UL 1477. 1.6 The type of refrigerant used in the system shall comply with the Standard for Refrigerants, UL 2182. JUNE 25, 2015 CYLINDER VALVES - UL 1769 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR

24、DISTRIBUTION WITHOUT PERMISSION FROM UL 2 General 2.1 Components 2.1.1 Except as indicated in 2.1.2, a component of a product covered by this standard shall comply with the requirements for that component. See Appendix A for a list of standards covering components generally used in the products cove

25、red by this standard. 2.1.2 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 b) Is superseded by a requirement in this standard. 2.1.3 A component

26、 shall be used in accordance with its rating established for the intended conditions of use. 2.1.4 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

27、 exceeding specied limits, and shall be used only under those specic conditions. 2.1.5 A cylinder valve is permitted to incorporate several different types of components such as, but not limited to, a back pressure check-valve, excess ow check-valve, quick-disconnect coupling, quick-closing coupling

28、, xed tube vent valve, liquid-level gauge, and/or high pressure gauge. 2.2 Units of measurement 2.2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.3 Undated references 2.3.1 Any undated reference to a code or standard appe

29、aring in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. JUNE 25, 2015 CYLINDER VALVES - UL 1769 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Service-Pressure and Temp

30、erature Ratings 3.1 The service-pressure rating of a cylinder valve intended for use with anhydrous ammonia, LP-Gas, MPS-Gas, or acetylene shall not be less than 250 psig (1.7 MPa). 3.2 The service-pressure rating of a cylinder valve intended for use with carbon dioxide shall not be less than 1800 p

31、sig (12.41 MPa). 3.3 The service-pressure rating of a cylinder valve intended for use with propylene shall not be less than 325 psig (2.2 MPa). 3.4 The service-pressure rating of a cylinder valve intended for all other liqueed or nonliqueed compressed gases or compressed gas in solution shall not be

32、 less than the maximum pressure dened for the connection that complies with the Standard for Compressed Gas Cylinder Valve Outlet and Inlet Connections, CGA V-1. 3.5 Cylinder valves covered by these requirements are intended for use at ambient temperatures within the range of minus 40F 130F (minus 4

33、0C 55C). 4 Glossary 4.1 For the purpose of this standard, the following denitions apply: 4.2 COMPRESSED GAS IN SOLUTION (ACETYLENE) A nonliqueed compressed gas that is dissolved in a solvent. 4.3 CYLINDER A portable container that complies with the specication for cylinders constructed under Subpart

34、 C of Part 178 of the DOT Regulations and similar cylinder specications of the TC Regulations. 4.4 DOT REGULATIONS The U.S. Department of Transportation Regulations for the Transportation of Hazardous Materials, under Code of Federal Regulations Title 49, Parts 100 199. 4.5 FUEL GAS Acetylene, hydro

35、gen, natural gas, liqueed petroleum gas (LP-Gas), methylacetylene-propadiene stabilized gas (MPS-Gas), and other liqueed and nonliqueed ammable gases that are stable because of their composition, or because of the conditions of storage. 4.6 LIQUEFIED COMPRESSED GAS A gas which, under the charged pre

36、ssure, is partially liquid at a temperature of 70.0F (21.1C). 4.7 LIQUEFIED PETROLEUM GAS (LP-GAS OR LPG) Any material having a vapor pressure not exceeding that allowed for commercial propane that is composed predominantly of the following hydrocarbons, either by themselves (excluding propylene) or

37、 as mixtures: propane, propylene, butane (normal butane or isobutane) and butylenes. 4.8 NONLIQUEFIED COMPRESSED GAS A gas, other than a gas in solution, which under the charged pressure is entirely gaseous at a temperature of 70.0F (21.1C). 4.9 PRESSURE-RELIEF DEVICE A device intended to prevent ru

38、pture of a normally charged cylinder, when exposed to abnormal or emergency conditions such as a re condition. 4.10 TC REGULATIONS The Transport Canada Regulations under the Transportation of Dangerous Goods Act. JUNE 25, 2015 CYLINDER VALVES - UL 1769 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FUR

39、THER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION 5 General 5.1 A valve shall include all of the components required for its intended function and installation, and shall be furnished as a single unit or assembly. 5.2 A valve intended to be repaired shall be constructed so th

40、at parts are capable of being reassembled after being dismantled to the extent required for routine maintenance. 5.3 A seat disc shall be attached to its poppet or holder, or otherwise assembled to prevent it from becoming dislocated under service conditions. The means to secure the disc shall not r

41、ely on cement or adhesive. 5.4 A brazing material used for joining liquid-conning parts of a valve for LP-Gas shall have a melting point (solidus temperature) not less than 1000F (538C). Brazing shall not be used on a valve intended for use with anhydrous ammonia. See 7.7. 5.5 A valve shall not be e

42、quipped with a means to prevent it from closing completely. 5.6 A valve shall be constructed so that a pressure-relief device operates in its intended manner with the shut-off portion of the valve, and the overlling prevention device if provided, in the closed position. 5.7 A valve for LP-Gas for us

43、e on nominal44 0pound nominal LP-Gas capacity (10.2 95.3 pound water capacity) shall be provided with all of the following: a) A CGA 791, CGA 793, or CGA 810 (Type I or Type II) outlet connection complying with the Standard for Compressed Gas Cylinder Valve Outlet and Inlet Connections, CGA V-1. b)

44、An overlling prevention device complying with the Standard for Overlling Prevention Devices, UL 2227. c) A xed maximum liquid level gauge including a dip tube. The vent valve portion of the gauge shall be of the type that incorporates a at-bladed screwdriver slot for operation. d) The xed maximum li

45、quid level gauge (vent valve) shall have the vent stem retained, such as by staking or crimping, so that it cannot be removed from the valve body by reverse rotation. Exception No. 1: Valves intended for use on cylinders used in industrial truck service (including forklift truck cylinders) and cylin

46、ders identied and used in industrial welding and cutting gas applications, are not required to comply with the requirements noted in (a), (b), and (c) above. Exception No. 2: A CGA 793 outlet connection complying with the Standard for Compressed Gas Cylinder Valve Outlet and Inlet Connections, CGA V

47、-1 shall be limited to use on composite cylinders between 2.2 and 19 lbs propane capacity. JUNE 25, 2015 CYLINDER VALVES - UL 1769 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5.8 The maximum venting ow from a xed maximum liquid level ga

48、uge valve for LP-Gas shall not exceed that from a No. 54 drill orice (0.055 inch diameter). 5.9 For valves provided with a threaded overlling prevention device, the device shall be attached to the valve body with a sealing compound suitable for LP-Gas. Polytetrauoroethylene (PTFE) tape shall not be

49、used. 6 Handwheels 6.1 A valve for LP-Gas intended for use with an overlling prevention device shall comply with the following: a) The handwheel design shall be tri-lobular as shown in Figure 6.1. b) The handwheel shall be permanently attached and be integral to the valve stem or secured with a tamper resistant fastener. The handwheel shall be nonremovable with common hand tools such as screwdrivers, pliers, wrenches, etc. 6.2 The tri-lobular handwheel