The Position,detector, cataloged under National Stock Number 4470-01-680-2231, is classified within Federal Supply Class 4470 (Nuclear Reactors) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4470-01-680-2231 |
| Primary Part Number | MK9 |
| Item Name | Position,detector |
| FSC / FSG | 4470 / 44 — Nuclear Reactors |
| Manufacturer | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MK9 PRIMARY | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA) |
| SUB37000109537 | Rolls-Royce Submarines Limited (GBR) |
| 70010784 | Bae Systems Marine Limited (GBR) |
NSN 4470-01-680-2231 is a Position,detector, manufactured by Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc, classified under FSC 4470, Nuclear Reactors. Status: active.
NSN 4470-01-680-2231 has 3 manufacturer part numbers on file: MK9 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), SUB37000109537 (Rolls-Royce Submarines Limited), 70010784 (Bae Systems Marine Limited).
Key specifications for MK9: Special Features: WIDTH 240.3MM, LENGTH 248.48, WEIGHT 7KG, KG; Part Name Assigned by Controlling Agency: VALVE POSITION DETECTOR ASSEMBLY; End Item Identification: DREADNOUGHT CLASS PRIMARY CIRCUIT MAIN ISOLATION VALVE. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.