The Parts Kit,ball Valve, cataloged under National Stock Number 4820-01-477-2788, 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 6 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-477-2788 |
| Primary Part Number | 2643-405-01 ITEM 47,50CP |
| Item Name | Parts Kit,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Component Quantity | 02 |
| End Item Source | 53711 |
| Supply Items and Quantities | "CRESENT STEEL BALL, 0.500 I.D. X 1.060 O.D; TORLON SEAT, 1.250 I.D. X 1.748 O.D." |
| Criticality Code Justification | FEAT |
| End Item Name | VALVE ASSY - BALL, AIR BLEED TYPE, 0.25 - 2.50 IN, 0 - 4500 PSI IN |
| Document Source | 53711 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 2643-405-01 ITEM 47,50CP PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 2643-405-01-ITEM 47,50 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-477-2788 is a Parts Kit,ball Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-477-2788 has 1 manufacturer part number on file: 2643-405-01 ITEM 47,50CP (Naval Inventory Control Point Mechanicsburg).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-539-1580, 4820-01-633-4627, 4820-01-654-1242. Verify interchangeability with system specifications before substitution.
Key specifications for 2643-405-01 ITEM 47,50CP: Component Quantity: 02; End Item Source: 53711; Supply Items and Quantities: "CRESENT STEEL BALL, 0.500 I.D. X 1.060 O.D; TORLON SEAT, 1.250 I.D. X 1.748 O.D."; Criticality Code Justification: FEAT. 6 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.