The Stem,valve, cataloged under National Stock Number 4820-00-901-8201, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tyco Fire Products Lp. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-901-8201 |
| Primary Part Number | 20-08459L1 |
| Item Name | Stem,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | QUALITY CONTROLLED IN ACCORDANCE WITH NAVY LEVEL 1 ASSURANCE GUIDE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 20-08459L1 | Tyco Fire Products Lp (USA) |
| V8459L1 | Tyco Fire Products Lp (USA) |
| Reference | Meaning |
|---|---|
| V8459 | 5/9 Secondary reference Tyco Fire Products Lp |
| 20-08459 | 3/1 Design control — primary reference Tyco Fire Products Lp |
NSN 4820-00-901-8201 is a Stem,valve, manufactured by Tyco Fire Products Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-901-8201 has 2 manufacturer part numbers on file: 20-08459L1 (Tyco Fire Products Lp), V8459L1 (Tyco Fire Products Lp).
Key specifications for 20-08459L1: Reference Number Differentiating Characteristics: QUALITY CONTROLLED IN ACCORDANCE WITH NAVY LEVEL 1 ASSURANCE GUIDE. 1 specification is 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.