| 212 | K7766 | BRITISH STANDARDS INSTITUTION |
| 5099 ITEM 26 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| BO397 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| D0107C | K4668 | BRISTOL BABCOCK LTD |
| BS1806-212 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-212 | K7766 | BRITISH STANDARDS INSTITUTION |
| NC 30606 ITEM 26 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| DEFSTAN02-337-212-MN80 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| NES 337 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-1984 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-212-MN80 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES337-212-MN80-(N83B) | L6427 | MOBILE VALVE REPAIRS |
| NC 30606 ITEM 26 | L6427 | MOBILE VALVE REPAIRS |
| D0107C | U2661 | BRISTOL BABCOCK LTD |
| O-RING | K0207 | HALE HAMILTON (VALVES) LIMITED |
| O-RING | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| O-RING | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| O-RING | K7766 | BRITISH STANDARDS INSTITUTION |
| O-RING | U2661 | BRISTOL BABCOCK LTD |
| NES337-212-MN80-(N83B) | U6183 | PRECISION POLYMER ENGINEERING LIMITE |