BS 746:2005+A1:2009
$102.76
Specification for gas meter unions and adaptors
| Published By | Publication Date | Number of Pages |
| BSI | 2009 | 18 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British Standard |
| 3 | Contents |
| 5 | 1 Scope 2 Normative references 3 Terms and definitions adaptor boss adaptor washer liner nut sealing disc |
| 6 | union union washer 4 Materials 4.1 Materials Metal fittings 4.2 Elastomeric washers 5 Dimensions 5.1 General 5.2 Undercuts 6 Machined surfaces 7 Screw threads |
| 7 | Basic Whitworth form 8 Bosses 8.1 Bosses for diaphragm meters with metal cases 8.2 Bosses for ultrasonic gas meters 9 Finish 10 Gas tightness 10.1 When subjected to the gas tightness test given in 10.2, no air bubbles shall be released from the assembled gas fittings. 10.2 Connect the fittings together in the configuration to be used for the installation of a gas meter. Pressurize the assembly … |
| 8 | Boss dimensions |
| 9 | Nut dimensions |
| 10 | Liner dimensions |
| 11 | Liner dimensions |
| 12 | Reducing adaptor dimensions |
| 13 | Increasing adaptor dimensions |
| 14 | Union washer dimensions Adaptor washer dimensions |
| 15 | Sealing disc dimensions |
| 16 | External thread dimensions Internal thread dimensions |
