| BS1806-220 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-220 | K7766 | BRITISH STANDARDS INSTITUTION |
| HTE 7300-N31-220 | K0359 | WARTSILA WATER SYSTEMS LIMITED |
| HTE 7300-N31-220 | K2617 | HIGH TEMPERATURE ENGINEERS LTD |
| HTE 7300-N31-220 | U1918 | MISSION SYSTEMS WIMBORNE LIMITED |
| HTE7300-N31-220 | U9084 | EATON AEROSPACE LTD |