| 232 | K7766 | BRITISH STANDARDS INSTITUTION |
| BO5308 | K0207 | HALE HAMILTON (VALVES) LIMITED |
| DEFSTAN02-337-232-MN80 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| BS1806-232 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-232 | K7766 | BRITISH STANDARDS INSTITUTION |
| BO5308 | L6427 | MOBILE VALVE REPAIRS |
| NES 337 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-1984 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-232-MN80 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| P.L. M.C.M./372/04/001 | K4944 | BAE SYSTEMS SURFACE SHIPS LIMITED |
| P.L. M.C.M./372/04/001 REFERENC- | K4944 | BAE SYSTEMS SURFACE SHIPS LIMITED |
| H947-543-1484 | K6984 | DEFENCE LOGISTICS AGENCY |
| NES337-232-MN80-(N83B) | L6427 | MOBILE VALVE REPAIRS |
| NES337-232-MN80-(N83B) | U6183 | PRECISION POLYMER ENGINEERING LIMITE |
| P.L.004501924 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| P.L.004501924 REFERENCE 1104 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |