The Seat,valve, cataloged under National Stock Number 4820-00-209-5953, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-209-5953 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Style Designator | FAUCET |
| Body Inside Diameter | 1.000 INCHES NOMINAL IN |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Reference Number Differentiating Characteristics | ITEMS THAT SUPPORT A LEVEL 1 OR SUBSAFE CRITICAL SYSTEM THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS |
| Seating Surface Shape | ANGULAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| V3417 | 5/9 Secondary reference U.S. Government activity |
| 101-8055 | 5/1 Secondary reference Spectrum Educational Supplies Inc |
| V7879PC4 | 5/9 Secondary reference Tyco Fire Products Lp |
| 101-8055 | 3/1 Design control — primary reference Tyco Fire Products Lp |
| 101-8055Q3 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V3417 | 5/9 Secondary reference Tyco Fire Products Lp |
NSN 4820-00-209-5953 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3455-01-436-6665. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-209-5953: Overall Height: 0.219 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Style Designator: FAUCET; Body Inside Diameter: 1.000 INCHES NOMINAL IN. 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.