The Seat,valve, cataloged under National Stock Number 4820-01-548-1563, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-548-1563 |
| Primary Part Number | 7383858-PLC-12385-3 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | EQUIPMENT AND/OR PARTS REQUIRING SPECIAL MATERIAL CONTROL AND QUALITY ASSURANCE WHICH SUPPORTS SURFACE OR SUBMARINE APPLICATIONS. SPECIAL CLEANING AND PACKAGING FOR OXYGEN/HYDROGEN SERVICE IS REQUIRED |
| 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 |
|---|---|
| 7383858-PLC-12385-3 | Naval Sea Systems Command (USA) |
| H547-0001-PLC-12385-3VG | Naval Inventory Control Point Mechanicsburg (USA) |
| PLC-12385 PC 3VG | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550478-PLC-12385-3VG | Naval Inventory Control Point Mechanicsburg (USA) |
| 112128DCVG | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0002-PLC-12385-3VG | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-PLC-12385-3VG | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 112128DC | 5/1 Secondary reference U.S. Government activity |
| PLC-12385 PC 3 | 5/1 Secondary reference U.S. Government activity |
| 7550478-PLC-12385-3 | 3/1 Design control — primary reference Naval Sea Systems Command |
| G547-0002-PLC-12385-3 | 5/1 Secondary reference U.S. Government activity |
| H547-0001-PLC-12385-3 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-548-1563 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-548-1563 has 7 manufacturer part numbers on file: 7383858-PLC-12385-3 (Naval Sea Systems Command), H547-0001-PLC-12385-3VG (Naval Inventory Control Point Mechanicsburg), PLC-12385 PC 3VG (Naval Inventory Control Point Mechanicsburg), 7550478-PLC-12385-3VG (Naval Inventory Control Point Mechanicsburg), 112128DCVG (Naval Inventory Control Point Mechanicsburg) and 2 more.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-643-9100. Verify interchangeability with system specifications before substitution.
Key specifications for 7383858-PLC-12385-3: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: EQUIPMENT AND/OR PARTS REQUIRING SPECIAL MATERIAL CONTROL AND QUALITY ASSURANCE WHICH SUPPORTS SURFACE OR SUBMARINE APPLICATIONS. SPECIAL CLEANING AND PACKAGING FOR OXYGEN/HYDROGEN SERVICE IS REQUIRED. 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 4820-01-548-1563 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.