| 139 | K7766 | BRITISH STANDARDS INSTITUTION |
| 5020 ITEM 31 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| 5020/31 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| B05321 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| BS1806 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806-139 | K7766 | BRITISH STANDARDS INSTITUTION |
| MV22/MK22 ITEM 31 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| MV22/MK22/31 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| NA.30296 ITEM 31 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| NA.30296/31 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| NA36100 ITEM 50 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| DEFSTAN02-337-139-MN80 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| NES 337 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| BSM48-139 | K7766 | BRITISH STANDARDS INSTITUTION |
| NES 337-139-MN80 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-1984 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES337-139-MN80-(N83B) | U6183 | PRECISION POLYMER ENGINEERING LIMITE |