Skip to content
Please enter a keyword to search

  • BS 746:2014

    Current The latest, up-to-date edition.

    Specification for gas meter unions and adaptors

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  30-11-2014

    Publisher:  British Standards Institution

    Add To Cart

    Table of Contents - (Show below) - (Hide below)

    Foreword
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Materials
    5 Dimensions
    6 Machined surfaces
    7 Screw threads
    8 Strength of nuts and female adaptor ends
    9 Finish
    10 Marking
    Bibliography

    Abstract - (Show below) - (Hide below)

    Defines requirements and test methods for unions and adaptors for the installation of low pressure gas meters.

    Scope - (Show below) - (Hide below)

    This British Standard specifies requirements and test methods for unions and adaptors for the installation of low pressure gas meters. It is applicable to unions and adaptors for gas meters for use with 1st, 2nd and 3rd family gases at temperatures between -20°C and+60°C, up to a maximum operating pressure of 75 mbar 1) and a maximum incidental pressure of 200 mbar. The gas tightness of the gas meter unions and adaptors is also specified. NOTE The tests specified in this standard are type tests, except for that specified in 4.2.3 .

    General Product Information - (Show below) - (Hide below)

    Committee GSE/25
    Development Note Supersedes BS 746(2005) & 12/30243876 DC. (11/2014)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 8499:2017 Specification for domestic gas meter boxes and meter bracket
    BS 6400-1:2016 Specification for installation, exchange, relocation, maintenance and removal of gas meters with a maximum capacity not exceeding 6 m3/h Low pressure (2nd family gases)

    Standards Referencing This Book - (Show below) - (Hide below)

    BS EN 12165:2011 Copper and copper alloys. Wrought and unwrought forging stock
    BS EN 12167:2011 Copper and copper alloys. Profiles and bars for general purposes
    BS EN 10088-3:2014 Stainless steels Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
    BS EN 1359:2017 Gas meters. Diaphragm gas meters
    BS 7371-6(1998) : 1998 COATINGS ON METAL FASTENERS - PART 6: SPECIFICATION FOR HOT DIPPED GALVANIZED COATINGS
    BS EN 549:1995 Specification for rubber materials for seals and diaphragms for gas appliances and gas equipment
    BS EN 1652:1998 Copper and copper alloys. Plate, sheet, strip and circles for general purposes
    BS 1936-1:1952 Undercuts and runouts for screw threads Inch screw threads
    BS EN 14236:2007 Ultrasonic domestic gas meters
    BS EN 1982:2017 Copper and copper alloys. Ingots and castings
    BS EN 1562:2012 Founding. Malleable cast irons
    BS EN 12329:2000 Corrosion protection of metals. Electrodeposited coatings of zinc with supplementary treatment on iron or steel
    BS EN 12168:1998 Copper and copper alloys. Hollow rod for free machining purposes
    BS EN ISO 27830:2013 Metallic and other inorganic coatings. Guidelines for specifying metallic and inorganic coatings
    BS EN 1976:2012 Copper and copper alloys. Cast unwrought copper products
    BS EN 12420:2014 Copper and copper alloys. Forgings
    BS EN 10242:1995 Threaded pipe fittings in malleable cast iron
    BS EN 12164:2011 Copper and copper alloys. Rod for free machining purposes
    View more information

    • Access your standards online with a subscription

      Features

      • Simple online access to standards, technical information and regulations
      • Critical updates of standards and customisable alerts and notifications
      • Multi - user online standards collection: secure, flexibile and cost effective