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BS 746:2014

Current
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

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

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

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 .

Committee
GSE/25
DevelopmentNote
Supersedes BS 746(2005) & 12/30243876 DC. (11/2014)
DocumentType
Standard
Pages
22
PublisherName
British Standards Institution
Status
Current
Supersedes

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 m<sup>3</sup>/h Low pressure (2nd family gases)

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

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PDF - English
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