| BS030 PTFE | K2980 | SHIPHAM VALVES A DIVISION OF HAMWORTH VALVES LTD |
| BS1806-030 | K7766 | BRITISH STANDARDS INSTITUTION |
| M22122 ITEM 3 | K2980 | SHIPHAM VALVES A DIVISION OF HAMWORTH VALVES LTD |
| M22122/3 | K2980 | SHIPHAM VALVES A DIVISION OF HAMWORTH VALVES LTD |
| BSM48-030 | K7766 | BRITISH STANDARDS INSTITUTION |