The Seat,valve, cataloged under National Stock Number 4820-00-431-6770, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-431-6770 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | ITEM THAT SUPPORTS A LEVEL 1 OR SUBSAFE CRITICAL SYSTEM THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| V3059Q3 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V-5257 PIECE 4Q3 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 20-03059 | 3/1 Design control — primary reference Tyco Fire Products Lp |
| V-5257 PIECE 4 | 5/1 Secondary reference Tyco Fire Products Lp |
| V-7683 PIECE 4 PART V-3059 | 5/1 Secondary reference Portland Valve Llc |
| V-5001 PIECE 4 | 5/1 Secondary reference Tyco Fire Products Lp |
| V-5001 PIECE 4Q3 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V-7683 PIECE 4 PART V-3059Q3 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V3059 | 5/9 Secondary reference Tyco Fire Products Lp |
| V-4493 PIECE 4 | 5/1 Secondary reference Tyco Fire Products Lp |
| 20-03059Q3 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V-4493 PIECE 4Q3 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4820-00-431-6770 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-431-6770: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: ITEM THAT SUPPORTS A LEVEL 1 OR SUBSAFE CRITICAL SYSTEM THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS. 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 4820-00-431-6770 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.