ANSI/IAS NGV 4.6-1999

(reaffirmed 2019)• CSA 12.56-M99

(reaffirmed 2018)

Manually operated valves for natural gas dispensing systems

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  ANSI/IAS NGV 4.6-1999 • CSA 12.56-M99

  July 1999

  
  

  Title: Manually operated valves for natural gas dispensing systems

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  AMERICAN NATIONAL STANDARD CANADIAN STANDARDS ASSOCIATION ANSI/IAS NGV 4.6-1999 CSA 12.56-M99

  
  

  First Edition - 1999

  
  

  MANUALLY OPERATED VALVES FOR NATURAL GAS DISPENSING SYSTEMS

  
  

  Approved by

  
  

  American National Standards Institute, Inc., February 18, 1999 Interprovincial Gas Advisory Council, March 15, 1999

  This Standard is effective June 1, 2000

  
  

  Prepared by CSA INTERNATIONAL

  8501 East Pleasant Valley Road 178 Rexdale Boulevard Cleveland, Ohio 44131 Toronto, Ontario

  Canada M9W 1R3

  
  

  On behalf of

  the Natural Gas Vehicle Coalition

  
  

  
  

  
  

  Published - July 1999 Copyright © 1998

  Canadian Standards Association

  
  

  Permission is granted to republish material herein in laws or ordinances, and in regulations, administrative orders, or similar documents issued by public authorities. Those desiring permission for other republication should consult CSA International at 178 Rexdale Boulevard, Toronto, Ontario, Canada M9W 1R3.

  
  

  Copyright © 1999 CSA America, Inc.

  Permission is granted to republish material herein in laws or ordinances, and in regulations, administrative orders, or similar documents issued by public authorities. Those desiring permission for other republication should consult CSA International at 8501 E. Pleasant Valley Road, Cleveland, Ohio 44131.

  
  

  CSA Group	American National Standards Institute
  The Canadian Standards Association (operating as CSA Group), under whose auspices this National Standard has been produced, was chartered in 1919 and accredited by the Standards Council of Canada to the National Standards system in 1973. It is a not-for- profit, nonstatutory, voluntary membership association engaged in standards development and certification activities. CSA Group standards reflect a national consensus of producers and users including manufacturers, consumers, retailers, unions and professional organizations, and governmental agencies. The standards are used widely by industry and commerce and often adopted by municipal, provincial, and federal governments in their regulations, particularly in the fields of health, safety, building and construction, and the environment. Individuals, companies, and associations across Canada indicate their support for CSA Groups standards development by volunteering their time and skills to Committee work and supporting CSA Groups objectives through sustaining memberships. The more than 7000 committee volunteers and the 2000 sustaining memberships together form CSA Groups total membership from which its Directors are chosen. Sustaining memberships represent a major source of income for CSA Groups standards development activities. CSA Group offers certification and testing services in support of and as an extension to its standards development activities. To ensure the integrity of its certification process, CSA Group regularly and continually audits and inspects products that bear the	The American National Standards Institute (ANSI), Inc. is the nationally recognized coordinator of voluntary standards development in the United States through which voluntary organizations, representing virtually every technical discipline and every facet of trade and commerce, organized labor and consumer interests, establish and improve the some 10,000 national consensus standards currently approved as American National Standards. ANSI provides that the interests of the public may have appropriate participation and representation in standardization activity, and cooperates with departments and agencies of U.S. Federal, state and local governments in achieving compatibility between government codes and standards and the voluntary standards of industry and commerce. ANSI represents the interests of the United States in international nontreaty organizations such as the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). The Institute maintains close ties with regional organizations such as the Pacific Area Standards Congress (PASC) and the Pan American Standards Commission (COPANT). As such, ANSI coordinates the activities involved in the U.S. participation in these groups. ANSI approval of standards is intended to verify that the principles of openness and due process have been followed in the approval procedure and that a consensus of those directly and materially affected by the standards has been achieved. ANSI coordination is intended to assist the voluntary system to ensure that national standards needs are identified and met with a
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  PREFACE

  
  

  This publication represents a standard for safe operation, substantial and durable construction and performance testing of components for manually operated valves for natural gas dispensing systems, within limitations given below and in the scope of this standard.

  
  

  This standard is based on proven engineering principles, research and the combined expertise of gas utilities, manufacturers, users, and others having specialized experience.

  
  

  Nothing in this standard is to be considered in any way as indicating a measure of quality beyond compliance with the provisions it contains. It is designed to allow compliance of products which may exceed that specified in the provisions herein. In its preparation, full recognition has been given to possibilities of improvement through ingenuity of design. This standard is subject to revision as further experience and investigation may show it is necessary and desirable.

  
  

  CSA International (CSA), and their respective Laboratories, do not assume or undertake to discharge any responsibility of the manufacturer or any other party. CSA International, shall not incur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use, interpretation of or reliance upon this standard.

  
  

  Users of this Harmonized American National and Canadian Standards Association Standard are advised that the devices/products/activities within its scope may be subject to regulation at the Federal, state, provincial, or local levels. Users are strongly urged to investigate this possibility through appropriate channels. In the event of a conflict with this standard, the Federal, state, provincial or local regulations should be followed.

  
  

  This standard does not apply to fuel system components that will be incorporated during original manufacture of motor vehicles which comply with Federal Motor Vehicle Safety Standards (FMVSS) or Canadian Motor Vehicle Safety Standards (CMVSS) for Natural Gas Powered Vehicles.

  
  

  CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute, Inc., require that action be taken to reaffirm, revise, or withdraw this standard no later than five (5) years from the date of approval. Purchasers may receive current information on this and other ANSI standards by calling or writing CSA International, 8501 East Pleasant Valley Road, Cleveland, Ohio 44131, (216) 524-4990.

  
  

  Information on this and other Canadian standards can be obtained by calling or writing CSA International, 78 Rexdale Boulevard, Toronto, Ontario, Canada M9W 1R3.

  
  

  EFFECTIVE DATE: An organization using this standard for product evaluation as a part of its certification program will normally establish the date by which all products certified by that organization should comply with this standard. In Canada, effective dates are established by the Interprovincial Gas Advisory Council.

  HISTORY OF DEVELOPMENT OF ANSI/IAS NGV 4.6i iCSA 12.56

  
  

  (This history is informative and is not part of the standard)

  
  

  During 1984, there was growing need in the U.S. natural gas vehicle industry for guidelines pertaining to the assembly of aftermarket equipment installed on motor vehicles in order to operate alternatively on either gasoline or natural gas. The American Gas Association Laboratories (AGAL), in response to this need developed an A.G.A. Requirement for Natural Gas Vehicle (CNG) Conversion Kits, No. 1-85. This requirement was intended to help promote the safe development and installation of NGV conversion systems by manufacturers and installers. The first draft of A.G.A. Requirement No. 1-85 was developed during 1984 and 1985, with the final version dated August 20, 1985.

  
  

  At the time of its issuance, the A.G.A. No. 1-85 was in compliance with NGV equipment and fueling stations specifications published by the National Fire Protection Association (NFPA) under its Standard for Compressed Natural Gas (CNG) Vehicular Fuel Systems, NFPA 52. The first edition of NFPA 52 was issued in 1984. A second edition was issued in 1988.

  
  

  In 1988 a group of U.S. gas utilities formed the Natural Gas Vehicle (NGV) Coalition (the Coalition) to promote widespread use of compressed natural gas as a transport fuel. The Coalition organized committees to address technical, marketing and legislative issues which would affect the future expansion of a U.S. transportation industry fueled by natural gas.

  
  

  The Coalition recognized that an important consideration in the successful commercialization of natural gas as a vehicle fuel was the issue of codes and standards (or the lack of codes and standards, or harmonized codes and standards) pertaining to both fuel stations and vehicle fuel systems. The Coalition’s Technology Committee was established to achieve the goal of an organized family of coordinated codes, standards and regulations addressing natural gas vehicles and fueling stations. To help achieve this goal, the Technology Committee established the Standards and Standardization Subcommittee.

  
  

  Subsequently, the third edition of NFPA 52 was published in 1992. This current edition incorporates many changes developed and recommended by the NGV Coalition’s task groups.

  
  

  During August 1992, an NGV Conversion Equipment Task Group was established to coordinate with the AGAL for requirements for compressed NGV conversion kits. The task group agreed the phrase “NGV fuel system” should replace “NGV conversion kits.” (An NGV fuel system is comprised of all major components required to supply, manage, and/or control fuel flow, enabling a vehicle to operate on natural gas.) The task group continued to meet during August, October and December 1992 to promulgate the development of a standard to cover both dedicated and bi-fuel natural gas systems for light and medium duty vehicles.

  
  

  A standard for NGV fuel system components already existed in Canada namely the National Standard of Canada CAN/CGA 12.3, Fuel System Components for Natural Gas Powered Vehicles. The genesis for this Canadian document was the Amendment to the 1982 CGA B149.1, Natural Gas Installation Code which added to the Code provisions for Natural Gas for Vehicles (NGV) fuel system components on highway

  vehicles, as well as coverage of NGV refuelling stations, Subsequently these NGV aspects evolved into stand-alone Canadian documents, one being the CAN/CGA-12.3 which was first published in February 1991.

  
  

  In order to further common goals for North American harmonization, the task group and the Canadian Gas Association (CGA) NGV Steering Committee on Natural Gas Powered Vehicles, initiated formation of a joint activity involving the CGA Steering Committee’s Subcommittee on Fuel System Components for Natural Gas Powered Vehicles and the Coalitions NGV Conversion Equipment Task Group.

  
  

  On February 17, 1993, the first joint meeting of the NGV Conversion Equipment Task Group and the CGA 12.3 Standards Subcommittee on Fuel System Components for Natural Gas Powered Vehicles was held. As a result the U.S. Task Group and Canadian Subcommittee agreed to establish the Joint NGVC/CGA Subcommittee on Natural Gas Vehicle Conversion Equipment, to develop harmonized requirements for a North American Bi-National standard. The newly established subcommittee agreed to proceed with harmonization of the Canadian Standard for Fuel System Components for Natural Gas Powered Vehicles, CAN/CGA-12.3, which was first published in February 1991, and A.G.A. requirement 1-85. In light of the different approaches in Canada and the U.S. (i.e., systems vs. components), the joint subcommittee agreed that separate harmonized standards be developed for both complete fuel systems and individual system components.

  
  

  Subsequently, as needs were identified, the following series of standards evolved under the auspices of the Joint NGV Subcommittee. Within this series, these standards are complementary and hence these standards achieve compatibility with regard to application and performance.

  
  

  STANDARDS FOR:

  
  

  • ANSI NGV 4.1-1999 CSA 12.5-M99, NGV DISPENSING SYSTEMS;

  • ANSI NGV 4.2-1999 CSA 12.52-M99, HOSES FOR NATURAL GAS VEHICLES AND DISPENSING SYSTEMS;

  • ANSI NGV 4.4-1999 CSA 12.54-M99, BREAKAWAY DEVICES FOR NATURAL GAS DISPENSING HOSES AND SYSTEMS;

  • ANSI NGV 4.6-1999 CSA 12.56-M99, MANUALLY OPERATED VALVES FOR NATURAL GAS DISPENSING SYSTEMS; AND

  • ANSI NGV 4.7-1999 CSA 12.57-M99, AUTOMATIC PRESSURE OPERATED VALVES FOR NATURAL GAS DISPENSING SYSTEMS.

The first edition of the harmonized ANSI/CSA Standard for NGV Manually Operated Valves for Natural Gas Dispensing Systems, was approved in the U.S. by the American National Standards Institute, Inc. on February 18, 1999, and in Canada by the (Interim CSA) NGV Standards Steering Committee on Natural Gas Vehicles and Fuelling on May 21, 1998, and the Canadian Interprovincial Gas Advisory Council (IGAC) on March 15, 1999.

The following identifies the designation and the year of the harmonized standard: ANSI NGV 4.6/CSA 12.56-1999

INTERPROVINCIAL GAS ADVISORY COUN CIL

(Feb ruary, 1999)

E. K. Taylor (Chair man) . . . . . . . . . . . . . . . . . . . . . . Technical Stan dar ds and Safety Authority

J. F. Wastle (Alternate Member)

G. L. William s (Vice Chair man) . . . . . . . . . . . . . . . . . Sask Power Corporat ion

B. E. Albe rts (Alternate Member)

D. Eastman . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Newfoun dland & Labrador Governm ent

1. Katz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . British Colum bia Ministry of Municipal Affairs J. Samson . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Regie du Batiment du Quebec

   1. LeCle rc (Alternate Member)

W. C. LaRose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Albe rta Dep artm ent of Labour

E. Marotta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Human Resources Development Cana da

W. G. Mitchell (Alternate Member)

1. McRae . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Governm ent of the North wes t Territories

   1. MacKay (Alternate Member)

I. W. Mault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manitoba Labour

D. Warr iner (Alternate Member)

D. Young . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Governm ent of the Yukon Territory

L. Osl and (Alternate Member)

M. O’Hearn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. B. Dep artm ent of Labour

1. Shaw (Alternate Member)

   
   

   D.C. Stewart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Nova Scotia Dep artm ent of Labour

   S. Pilon (Alternate Member)

   
   

2. Reid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Prince Edwar d Islan d Dep artm ent of Labour

I. Svorinich (Alternate Member) . . . . . . . . . . . . . . . . . . Gas Safety Program

S. Van Sickle (Secretary) . . . . . . . . . . . . . . . . . . . . . . CSA Internat ional

INTERIM CSA STEERING COMMITT EE ON NATURAL GAS POWERED VEHICLES AND FUE LLI NG

Oscar Alonso (Chair man) . . . . . . . . . . . . . . . . . . . Technical Stan dar ds & Safety Authority Andy Beregsz aszy . . . . . . . . . . . . . . . . . . . . . . . . Natura l Resources Cana da

Anthony Chan . . . . . . . . . . . . . . . . . . . . . . . . . . Fu elMaker Corporat ion

Alf Durn ie . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Albe rta Labour

Bernie Deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ontar io Ministry of Labour

Tony Filetti . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mogas Equipment

Adrian Ghelesel . . . . . . . . . . . . . . . . . . . . . . . . . BC Gas Utility Ltd.

Edwar d Hur d (Alternate Member) . . . . . . . . . . . . . B.C. Ministry of Municipal Affairs John Heenan . . . . . . . . . . . . . . . . . . . . . . . . . . . Veriteek NGV Cana da Corp.

Jim Jones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Union Gas Limited

Stan Kokotka (Alternate Member) . . . . . . . . . . . . . Enbridge Consumers Gas

Susana Katz . . . . . . . . . . . . . . . . . . . . . . . . . . . B.C. Ministry of Municipal Affairs

Benoit Led uc . . . . . . . . . . . . . . . . . . . . . . . . . . . Gas Metropolitain Inc. Han i Ragheb (Alternate Member) . . . . . . . . . . . . . Ministry of Labour

Floyd Runn ing . . . . . . . . . . . . . . . . . . . . . . . . . . Gas Equipment Supplies Ry Smith (Alternate Member) . . . . . . . . . . . . . . . . Union Gas Limited

Robert Selvazzo (Alternate Member) . . . . . . . . . . . . Union Gas Limited

Mike Tremayne . . . . . . . . . . . . . . . . . . . . . . . . . Enbridge Consumers Gas

Nick White . . . . . . . . . . . . . . . . . . . . . . . . . . . . Gas Technology Cana da

C. Barr igar (Secretary) . . . . . . . . . . . . . . . . . . . . . CSA Internat ional

JOINT NATURAL GAS VEHICLE COALITIO N

/(Interi m CSA) WORKING GROUP FOR

NATURAL GAS DISPENS ING

JOHN VRANICAR, Chairman Jim Kohut , Vice-Chairman

REPRESENTING MANUFACTURERS:

Terry Bouth illie r David Duey Peter Ehlers Tony Feger

Jam es Foster John Heenan Gary Koch

Jeffrey Kelly Pau l LeM ay Dave Myers

William Raymun do Tom Sewell John Shimer

REPRESENTING REGULATORY AUTHORITI ES:

Oscar Alonso Alf Durn ie Edwar d Hur d Susan Katz

REPRESENTING UTILITI ES:

John Vran icar Adrian Ghelesel Nan cy Pehrson Robert Selvazzo Mike Tremayne

REPRESENTING GENE RAL INT ERESTS:

Robert DeRe mer Bob Florczyk Joe Favot

Marie Giann occaro William Liss Mark Richar ds

Nick White

TABLE OF CONTENTS

Page PART I. CONSTRUCTION 1

1. SCOPE 1

2. GENERAL 1

3. ASSEMBLY 2

4. CONNECTIONS 2

5. BOLTS, NUTS AND SCREWS 3

6. MATERIALS 3

7. INSTRUCTIONS 3

8. MARKINGS 4

PART II. PERFORMANCE 5

1. GENERAL 5

2. LEAKAGE 5

3. HYDROSTATIC STRENGTH 6

4. MAXIMUM FLOW SHUT-OFF 6

5. STRENGTH 6

   TABLE I. TORQUE LIMITS (Field Conditions) 7

   TABLE II. LOAD FOR BENDING MOMENT TEST 7

   TABLE III. TORQUES FOR TURNING EFFORT TEST 9

   TABLE IV. IMPACT TEST 11

6. CONTINUED OPERATION 12

7. CORROSION TEST 13

8. MARKING MATERIAL ADHESION AND LEGIBILITY 13

EXHIBIT A. ITEMS UNIQUE TO ONE COUNTRY (Canada) 15

EXHIBIT B. LIST OF REFERENCE STANDARDS 16

i

TABLE OF CONTENTS (Continued)

Page PART III. MANUFACTURING AND PRODUCTION TESTS 18

PART IV. DEFINITIONS 19

APPENDIX A. EQUIPMENT AND D ATA T O BE

FURNISHED BY THE MANUFACTURER 28

DANGER

Testing described in these requirements may result in the sudden release of test gas at high pressure with dangerous explosive force. Adequate protection from explosion, concussion, and flying debris must be utilized to protect test personnel and facilities.

STANDARD FOR

HOSES FOR MANUALLY OPERATED NATURAL GAS DISPENSING SYSTEMS (ANSI/IAS NGV 4.6i iCSA 12.56)

•

PART I CONSTRUCTION

1. SCOPE

   
   

   1. These requirements apply to manually operated valves for high pressure natural gas.

      
      

   2. These requirements do not apply to cylinder shut-off valves.

      
      

   3. A valve that complies with the requirements for a Class A valve may be used for a Class B valve application, however, a Class B valve may not be substituted for a Class A valve. (See Part IV Definitions.)

      
      

2. GENERAL

   
   

   1. The construction of parts not covered by these requirements shall be in accordance with reasonable concepts of safety, substantiality and durability.

      
      

      All specifications as to construction set forth herein may be satisfied by the construction actually prescribed or such other construction as will provide at least equivalent performance.

      
      

   2. Valves shall be provided with means to compensate for manufacturing tolerance variations, displacement of lubricants, and for wear which may occur.

      
      

   3. For Items Unique To One Country (Canada) see Exhibit A.

      
      

   4. All references to psi throughout this document are to be considered gauge pressures unless otherwise specified.

      
      

   5. All dimensions used in this standard are in metric units [International System of Units (SI)], unless otherwise specified. If a value for a measurement, as given in this standard, is followed by an equivalent value in other units, the first stated is to be regarded as the specification.

1