The Insert,ball Valve, cataloged under National Stock Number 4820-01-544-5804, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-544-5804 |
| Primary Part Number | 2643-852-01 ITEM 24Q3 |
| Item Name | Insert,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 2643-852-01 ITEM 24Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-7286652 ITEM 24Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 845-7286652 ITEM 24 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 2643-852-01 ITEM 24 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-544-5804 is a Insert,ball Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-544-5804 has 2 manufacturer part numbers on file: 2643-852-01 ITEM 24Q3 (Naval Inventory Control Point Mechanicsburg), 845-7286652 ITEM 24Q3 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-707-5943. Verify interchangeability with system specifications before substitution.
Key specifications for 2643-852-01 ITEM 24Q3: Criticality Code Justification: ZZZY; Part Name Assigned by Controlling Agency: VALVE,BALL COMBINATION HULL AND BACKUP 1/2, 3/4, & 1 INCH (DRAWING) IN; End Item Identification: VALVE COMBINATION 0.50IPS 700PSI CUNI FLANGED; VALVE,BALL 1.00IPS 700PSI NICU FL,ST; Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS. 2 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.
NSN 4820-01-544-5804 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.