The Disk,valve, cataloged under National Stock Number 4820-01-421-5207, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is O. C. Keckley Company. Government technical data includes 2 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-421-5207 |
| Primary Part Number | T7104-1-A |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | O. C. Keckley Company |
| Status | ACTIVE |
| Media for Which Designed | AIR |
| Material | PLASTIC POLYPROPYLENE |
| 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 |
|---|---|
| T7104-1-A PRIMARY | O. C. Keckley Company (USA) |
| 25366A IT 26 | O. C. Keckley Company (USA) |
NSN 4820-01-421-5207 is a Disk,valve, manufactured by O. C. Keckley Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-421-5207 has 2 manufacturer part numbers on file: T7104-1-A (O. C. Keckley Company), 25366A IT 26 (O. C. Keckley Company).
Key specifications for T7104-1-A: Media for Which Designed: AIR; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: PLASTIC POLYPROPYLENE. 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.
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.