The Seat,valve, cataloged under National Stock Number 4820-01-441-3479, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Core Industries Inc. Dba Mueller Steam Specialty. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-441-3479 |
| Primary Part Number | 3.0-51-02-3 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Core Industries Inc. Dba Mueller Steam Specialty |
| Status | ACTIVE |
| Material | RUBBER BUNA N SEAT |
| 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 |
|---|---|
| 3.0-51-02-3 PRIMARY | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
| AN-3.0-51-K ITEM 5 | Core Industries Inc. Dba Mueller Steam Specialty (USA) |
NSN 4820-01-441-3479 is a Seat,valve, manufactured by Core Industries Inc. Dba Mueller Steam Specialty, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-441-3479 has 2 manufacturer part numbers on file: 3.0-51-02-3 (Core Industries Inc. Dba Mueller Steam Specialty), AN-3.0-51-K ITEM 5 (Core Industries Inc. Dba Mueller Steam Specialty).
Key specifications for 3.0-51-02-3: Special Features: FOR BUTTERFLY VALVE, SZ 3.000 IN. IN; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: RUBBER BUNA N SEAT. 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.